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Daikin DZ18VC Series, Service Instructions Manual

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Daikin DZ18VC Series Service Instructions Manual Download Page 47

47

SERVICING

Floor Joist or Roof Rafter

After the suction line has been strapped to the joist or rafter at 8’ intervals,

strap the liquid line to the suction line. 

8’

Metal Sleeve

Wire Tie

(around suction line only)

Floor Joist or

Roof Rafter

Tape or Wire Tie

Tape or Wire Tie

8’

If hanging line set from a joist or rafter,

use metal strapping

or heavy nylon wire tires

that are securely anchored.

Strapping placed

around the suction line only

F

igure 1-3. Installation of Refrigerant Piping (Horizontal)

SECTION 3.  OUTDOOR UNIT IS ABOVE THE INDOOR UNIT

Heat Pump ABOVE Indoor Coil

Maximum vertical

separation of 200 ft.

*Includes pressure losses of any elbows, bends, etc.

Maximum line set

equivalent length of 125 ft*.

The maximum line set
actual length is 100 ft.

1. Gas line must be sloped continuously towards the indoor unit.

2. The maximum elevation (vertical) difference between the outdoor unit and indoor unit is 100 feet.

3. The maximum line set equivalent length is 125 feet, which includes pressure losses of any elbow, bends, etc.  The maximum line

set actual length is 100 feet.

4. Inverted suction loop is not required at either unit.

5. An accumulator is not required for outdoor unit (accumulators are factory installed).

Summary of Contents for DZ18VC Series

Page 1: ...Coils Accessories Service Instructions This manual is to be used by qualified professionally trained HVAC technicians only Daikin does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person 2014 2017 2019 ...

Page 2: ...ician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools parts testing instru ments and the appropriate service manual REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS To locate an authorized servicer please consult your telephone book or the dealer from whom you purchased this product For further ass...

Page 3: ... anyone providing the terminal protective cover is properly in place If however the terminal protective cover is not properly in place a venting terminal may discharge a combination of a hot lubricating oil and refrigerant b flammable mixture if system is contaminated with air in a stream of spray which may be dangerous to anyone in the vicinity Death or serious bodily injury could occur Under no ...

Page 4: ... ton C ComfortNet 4 wire ready S Special D V 25 P E C B 1 4 AA Brand Engineering D Daikin Major Minor Revision Unit Application V Multi Position Varible Speed Refrigerant Charged Motor Communicating 4 R410A Tonnage Nominal Voltage 25 2 0 ton 1 208 230 V 37 3 0 ton 59 4 0 ton Cabinet Width 61 5 0 ton B 17 5 C 21 Cabinet Finish D 24 5 P Painted Communication Expansion Device C ComfortNet TM Capatibl...

Page 5: ...application shall not exceed 15 kW Airflow for 5 kW up to 10 kW heater kits shall be set to a speed tap corresponding to 1240 cfm ACCESSORIES MODELS HKSX03XC HKSX05XC HKSX06XC HKSX08XC HKSX10XC HKSC05XC HKSC08XC HKSC10XC HKSC15XA HKSC15XB HKSC15XF HKSC19CA HKSC19CB HKSC20DA HKSC20DB HKSC20XF HKSC25DC DV25PECB14A X X X X X X X X DV37PECC14A X X X X X X X X X X X X DV59PECD14A X X X X X X X X X X X ...

Page 6: ...LESS 1 SHUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR 10 MINUTES 2 MAKE SURE TO TOUCH THE EARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE PC BOARD 3 MEASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION BETWEEN C AND C USING A VOM VOLT OHM MILLIAMMETER WHILE PAYING ATTENTION NOT TO TOUCH THE CHARGED AREA WARNING ...

Page 7: ...1 SHUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR 10 MINUTES 2 MAKE SURE TO TOUCH THE EARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE PC BOARD 3 MEASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION BETWEEN C AND C USING A VOM VOLT OHM MILLIAMMETER WHILE PAYING ATTENTION NOT TO TOUCH THE CHARGED AREA WARNING ...

Page 8: ...et metal plate 4 Carefully slide sheet metal plate with electric board behind the refrigerant tubing PCB MOUNTING PLATE PCB SLIDE RAIL PCB ASSY Install the electrical board When working on a service port ensure that no refrigerant and or compressor oil is sprayed onto the electrical board This could damage the board s functionality 1 Wipe the stale grease completely from the installed piping If yo...

Page 9: ...t continues to soak up heat and vaporizes as it proceeds through the coil cooling the indoor coil down to about 48 F Heat is continually being transferred to the cool fins and tubes of the indoor evaporator coil by the warm system air This warming process causes the refrigerant to boil The heat removed from the air is carried off by the vapor As the vapor passes through the last tubes of the coil ...

Page 10: ...g from 0 F to 3 F setup through the Installer Option menu direc tion below This allows the cooling system to further reduce hu midity by lowering the temperature up to 3 F below the cooling setpoint in an attempt to better achieve desired humidity levels By default dehumidification needs to be turned ON at the thermo stat via the Dehumidification Equipment menu Dehumidification can be activated at...

Page 11: ...istor Suction Temperature OD HP LP sensor Outdoor High Low Pressure Sensor ID HP LP sensor Indoor High Low Pressure Sensor HPS High Pressure Switch Stop Valve Liquid Stop Valve Gas Fan Motor HP LP OD HP LP Sensor Check Valve HPS Outdoor Unit Indoor Unit Cooling EEV Td Thermistor Tm Thermistor Tb Thermistor Ta Thermistor Tl Thermistor SubACC Motor Check Valve Reversing Valve EEV Filter Filter Fan A...

Page 12: ...ne set length is too long X X X Blocked filter dryer X X X X X X X X X X OD EEV coil failure X X X X X X X X X X X X X X X X OD EEV failure X X X X X X X X X X X X X X X X ID EEV coil failure X X X X X X X X X X X X X ID EEV failure X X X X X X X X X X X X X Check valve failure Leakage X X X X X X X High Pressure switch failure X Pressure sensor failure X X X X X X X X X X X X Suction temp sensor ...

Page 13: ...X X Line set length is too long X X X X X Blocked filter dryer X X X X X X X X X X OD EEV coil failure X X X X OD EEV failure X X X ID EEV coil failure X X X X X X X X X X X X X X X X X ID EEV failure X X X X X X X X X X X X X X X X Check valve failure Blocked X X X X X X X X X High Pressure switch failure X Pressure sensor failure X X X X X X X Suction temp sensor failure X X X Discharge temp sen...

Page 14: ...OOR TEMPERATURE LOCKOUTS 35 S 4 CHECKING TRANSFORMER AND CONTROL CIRCUIT 36 S 12 CHECKING HIGH PRESSURE CONTROL SWITCH 36 S 13 CHECKING INDOOR AND OUTDOOR HI LOW PRESSURE SENSOR 36 S 17 CHECKING COMPRESSOR 37 S 17A RESISTANCE CHECK 37 S 17B GROUND TEST 37 S 26 TESTING TEMPERATURE SENSORS AND EEV COIL RESISTANCE 38 S 40A DVPEC HEATER CONTROL 39 S 50 CHECKING HEATER LIMIT CONTROL S OPTIONAL ELECTRIC...

Page 15: ... calling for cooling heating 1 Use a voltmeter to check for 24 volt at thermostat wires C and R in the indoor unit control panel 2 No voltage indicates trouble in the thermostat wiring or trans former source 3 Check the continuity of the thermostat and wiring Repair or replace as necessary With power ON LINE VOLTAGE NOW PRESENT WARNING ResistanceHeaters 1 Set room thermostat to a higher setting th...

Page 16: ...t multiple wires into a single terminal be twisted together prior to inserting into the plug connector Failure to do so may result in intermittent operation Typical 18 AWG thermostat wire may be used to wire the system components However communications reliability may be im proved by using a high quality shielded twisted pair cable for the data transmission lines In either case 250 feet is the max...

Page 17: ...TEM TEST in less than 20 F the unit may not be able to complete the SYSTEM TEST due to low suction pressure In this case re run SYSTEM TEST after ambient temperature exceeds 20 F 1 Ensure the thermostat is installed 2 Apply power to outdoor and indoor units 3 Start up After the application information is entered the initial system test must be run FOR INVERTER HEAT PUMP CONDENSER SYSTEM USING COMF...

Page 18: ... COMFORTNET USERMENU 5 Enter Installer password The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom 6 Select YES to continue 7 From the ComfortNet USER MENU select HEATPUMP ...

Page 19: ... test to run for its duration 5 15 minutes EQUIP TEST SCREEN will show the system test is ON once selected System test will operate the outdoor unit and the indoor unit through a series of startup tests Please proceed to the next step and allow for startup tests to complete Do not interrupt power to outdoor unit indoor unit or thermostat during system test ...

Page 20: ...SET THERMOSTAT TO CHARGE MODE Pleasefollow the following sequencetoenterCHARGE MODE CHARGE MODE allows for charging of the system System operates for a duration of approximately one hour while the equipment runs at full capacity After one hour the CHARGE MODE ends and the system resumes normal thermostat op eration Before starting the CHARGE MODE turn off the electric heater and gas furnace 1 On t...

Page 21: ...r Installer password The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom 4 Select YES to continue 5 SelectHEATPUMP 6 SelectMAINTENANCE ...

Page 22: ...MODEfromtheSYSTEMmenuonthemain screen If charging is not complete after 1 hour repeat 7 and 8 Refer to S 103 for refrigerant charge level adjustment 9 To terminate CHARGE MODE select CHARGE MODE screen again Press OFF Press DONE to terminate CHARGE MODE 10 Once CHARGE MODE is complete and has been terminated navigate to HOME screen Enter normal operation with temperature offset or thermostat sched...

Page 23: ...ing thermostat Maximum compressor speed can be changed to get the required capacity or efficiency Once the maximum speed is set the system operates between the set maximum speed and default low speed 1 On the HOME screen select MENU 2 FromtheMENUscreen selectCOMFORTNET USERMENU 3 Enter Installer password The password is the Date Code located on the thermostat and is available by entering the EQUIP...

Page 24: ...EATPUMP 6 Select CL RUN VALUES for cooling mode HT RUN VALUES for heating mode 7 Select COOL HEAT RPS RANGE Press COOL RPS RANGE for cooling mode or HEAT RPS RANGE heating mode to select the range in which the desired Maximum compressor speed falls ...

Page 25: ...ed Maximum compressor speed 9 Once Maximum compressor speed is set navigate to HOME screen Enter normal operation with temperature offset or thermostat schedule as desired SET THERMOSTAT TO ADJUST INDOOR AIR CFM TRIM 1 On the HOME screen select MENU 2 From the MENU screen select COMFORTNET USER MENU ...

Page 26: ...d The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom 4 Select YES to continue 5 SelectHEATPUMP 6 Select COOL SETUP COOLING MODE HEAT SETUP HEATING MODE ...

Page 27: ...ed cooling Cool Airflow Trim Low low speed cooling Heat Airflow Trim Hi high speed heating Heat Airflow Trim Int intermediate speed heating Heat Airflow Trim Low low speed heating Under each criteria a selection between 15 to 15 at the increment of the 3 can be made 8 Once COOL AIRFLOW TRIM is set navigate to HOME screen Enter normal operation with temperature offset or thermostat schedule as desi...

Page 28: ...1 Please follow the sequence 1 to 6 ofSET THERMOSTAT TO ADJUST INDOOR AIR CFMTRIM 2 Select Cool Set up for Cool Airflow Profile Cool ON Delay or Cool OFF Delay Heat Set up for Heat ON Delay or Heat OFF Delay Heat Airflow Profile DEFROST 3 Once Cool Set up Heat Set up settings are complete navigate to HOME screen ...

Page 29: ...t another 6 minutes before starting another force defrost cycle 1 On the HOME screen select MENU 2 FromtheMENUscreen selectCOMFORTNET USERMENU 3 Enter Installer password The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom 4 Select YES to continue ...

Page 30: ...SERVICING 30 5 Select HEAT PUMP 6 Select EQUIP TEST 7 Select FORCE DF CYCLE 8 Select ON Press DONE to initiate FORCE DEFROST CYCLE ...

Page 31: ...fault and stop electric heater Remove if no trim feature In this operation the gas valve and liquid service valve should be opened NOTE Manufacturer recommends to set PUMP DOWN using 7 segment display For more information see section Set 7 segment mode display to PUMP DOWN If difficulty is encountered using 7 segment display use the thermostat as an alternative method See section SET 7 SEGMENT MOD...

Page 32: ...SERVICING 32 4 Select YES to continue 5 Select HEAT PUMP 6 SelectMAINTENANCE 7 Select PUMP DOWN ...

Page 33: ...rvice valve approximately two minutes after compressor has come on Compressor will stop automatically then close the gas service valve immediately 9 To terminate PUMP DOWN select PUMP DOWN screen again Press OFF Press DONE to terminate PUMP DOWN 10 Once PUMP DOWN is set navigate to HOME screen After finishing PUMP DOWN operation unit will stop automatically Unit will show error code E11 after the ...

Page 34: ... display from 01 to 00 System will then automatically start PUMP DOWN operation For information on how to set 7 segment display see the sec tion SETTING THE MODE DISPLAY in this manual 2 Approximately one minute later the compressor should start operating Check the amperage at the compressor wiring to see the compressor operation status Unit display error code E11 System verification Test once the...

Page 35: ...P WITH OUTDOOR TEMPERATURE LOCKOUTS It is recommended to set the outdoor temperature lockouts during the initial thermostat set up This will enable the compressor to be turned off and switch heating source from refrigeration to aux iliary secondary heating under low ambient conditions Backup heat lockout temperature will enable auxiliary second ary heating to be turned on when outdoor temperature ...

Page 36: ...ine If abnormally high condensing pressures develop the contacts of the control open breaking the control circuit before the compressor motor overloads This control is automatically reset 1 Using an ohmmeter check across terminals of high pressure control with wire removed If not continuous the contacts are open 2 Attach a gauge to the dill valve port on the base valve With power ON LINE VOLTAGE N...

Page 37: ...rvicing or installing Multiple power sources may be present Failure to do so may cause property damage personal injury or death 1 Remove the leads from the compressor terminals See warnings S 17 before removing compressor terminal cover 2 Check the wiring connection of UVW on compressor terminal 3 Check the insulation resistance of compressor between the compressor terminal and unpainted refrigera...

Page 38: ...ure sensor Ts a suction temperature sensor Tgi an indoor gas temperature sensor Tli an indoor liquid temperature sensor To check above sensors 1 Disconnect power to the heat pump condensor 2 Disconnect the sensor from the electric board 3 Connect an ohmmeter across the sensor terminals The ohm meter should read be the resistance shown in the table THER MISTORRESISTANCEANDTEMPERATURECHARACTERISTICS...

Page 39: ...n on power to air handler or modular WARNING Line Voltage now present 2 Check voltage between pins 1 and 4 at the 4 wire motor con nector on the control board Voltage should be between 9 and 15 VDC Replace control if voltage is not as specified Electric Heat Sequencer Outputs HIGH VOLTAGE To avoid personal injury or death due to electrical shock disconnect electrical power before performing any se...

Page 40: ...d The low voltage circuit in the air handler is factory wired and terminates at the location provided for the electric heater s A minimum of field wiring is required to complete the installation Other components such as a Heating Cooling Thermostat and Outdoor Thermostats are available to complete the installation The system CFM can be determined by measuring the static pres sure external to the u...

Page 41: ...LECTRIC HEATERS Each individual heater element is protected with a one time fuse link which is connected in series with the element The fuse link will open at approximately 333 F WARNING Disconnect ALL power before servicing 1 Remove heater element assembly so as to expose fuse link 2 Using an ohmmeter test across the fuse link for continuity no reading indicates the link is open Replace as necess...

Page 42: ...e or explosion never use oxygen high pressure air or flammable gases for leak testing of a refrigeration system WARNING To avoid possible explosion the line from the nitrogen cylinder must include a pressure regulator and a pressure relief valve The pressure relief valve must be set to open at no more than 150 PSIG Pressure test the system using dry nitrogen and soapy water to locate leaks If you ...

Page 43: ... personal injury or death CAUTION Use refrigerant certified to AHRI standards Damage to the compressor caused by the use of used refrigerant is not covered by the warranty Most portable machines cannot clean used refrigerant to meet AHRI standards CAUTION Damage to the unit caused by operating the compressor with the suction valve closed is not covered under the warranty and may cause serious comp...

Page 44: ...t 3 Record the gauge pressure and the temperature of the line 4 Review the technical information manual or specification sheet for the model being serviced to obtain the design subcooling 5 Compare the hi pressure reading to the Required Liquid Line Temperature chart Find the hi pressure value on the left col umn Follow that line right to the column under the design subcooling value Where the two ...

Page 45: ...iolation of EPA regulations may result in fines or other penalties Now determine if a burn out has actually occurred Confirm by analyzing an oil sample using a Sporlan Acid Test Kit AK 3 or its equivalent Remove the compressor and obtain an oil sample from the suc tion stub If the oil is not acidic either a burnout has not occurred or the burnout is so mild that a complete clean up is not neces sa...

Page 46: ...rigerant lines must not touch wall Strap Sleeve Strap Sleeve Wire Tie Wire Tie PVC Pipe Caulk Outside Wall Armaflex Wrapped Suction Line Liquid Line Wood Block Between Studs IMPORTANT Refrigerant lines must NOT come into contact with structure Fiberglass Insulation Wood Block Figure 1 2 Installation of Refrigerant Piping Vertical New construction shown NOTE If line set is installed on the exterior...

Page 47: ...ON 3 OUTDOOR UNIT IS ABOVE THE INDOOR UNIT Heat Pump ABOVE Indoor Coil Maximum vertical separation of 200 ft Includes pressure losses of any elbows bends etc Maximum line set equivalent length of 125 ft The maximum line set actual length is 100 ft 1 Gas line must be sloped continuously towards the indoor unit 2 The maximum elevation vertical difference between the outdoor unit and indoor unit is 1...

Page 48: ...ows bends etc 1 The maximum elevation vertical difference between the outdoor unit and the indoor unit is 90 feet 2 Gas line must be installed in a manner to prevent liquid migration to the outdoor unit from the indoor unit The heat pump condenser unit is shipped with a predetermined factory charge level as shown in the following chart For longer line sets greater than 15 feet add 0 6 ounces of re...

Page 49: ...ations section Tables are also provided for each coil listing quantity of air CFM versus static pressure drop across the coil Too great an external static pressure will result in insufficient air that can cause icing of the coil Too much air can cause poor humidity control and condensate to be pulled off the indoor coil causing condensate leakage Too much air can also cause motor overloading and i...

Page 50: ...probe above the coil 2 A direct reading can be taken of the static pressure drop across the coil 3 Consult proper table for quantity of air STATICPRESSUREDROP If the total external static pressure and or static pressure drop exceeds the maximum or minimum allowable statics check for closed dampers dirty filters undersized or poorly laid out duct work ...

Page 51: ...and external static pressure E S P For heater kit installation it is important to set the capacity of the electric heater at two locations Set up Menu HT KIT kW of thermostat CONFIGURATION menu of the ComfortNet tm systems Advanced feature Menus REMOVED EMERGENCY MODE DIPSWITCH INFORMATION NOTE Upon start up in communicating mode the circuit board may display an Ed error This is an indication that...

Page 52: ...OR DEATH DUE TO ELECTRICAL SHOCK DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY SERVICE OR MAINTENANCE WARNING Refer to the Troubleshooting Chart at the end of this manual for assistance in determining the source of unit operational prob lems The 7 segment LED display will provide any active fault codes An arrow printed next to the display indicates proper orientation arrow points to top of dis...

Page 53: ...R OVER TEMPERATURE TRIP Voltage or Temperature Trip b7 INCOMPLETE PARAMETER SENT TO MOTOR Incomplete Parameters Sent to Motor b9 LOW INDOOR AIRFLOW Minor Error Code without EH mode No Display 9b LOW INDOOR AIRFLOW Major Error Code EH mode only LOW ID AIR EH MODE 70 EEV DISCONNECTION DETECTED EEV OPEN CKT 73 LIQUID SIDE THERMISTOR ABNORMALITY LIQ TEMP FLT 74 GAS SIDE THERMISTOR ABNORMALITY GAS TEMP...

Page 54: ... displays the model number serial number and control software revision for the equipment A model number check will help determine if the equipment shared data is correct for the unit if the model number is not correct for the air handler a memory card will be required to load the proper data Submenu Item Indication for Display Only not User Modifiable Model Number MOD NUM Displays the air handler ...

Page 55: ...ER CAN CHOOSE THE OPERATION MODE OF HUMIDIFIER HUM FAN SPD HUMIDITY AIRFLOW SELECTION IS ONLY DISPLAYED IF IND IS SELECTED IN HUM AND HUM IS SELECTED IN ACC USER CAN CHOOSE THE INDOOR FAN SPEED TRIM AT THE TIME OF HUMIDIFICATION HEATER KIT SELECTION CAN ALSO BE DONE FROM THIS MENU IT IS VERY IMPORTANT TO SELECT THE CORRECT HEATER KIT VALUE FOR NORMAL OPERATION OF THE SYSTEM THE SET UP MENU ALLOWS ...

Page 56: ...or error code in normal mode 2 digit 7 segment displays keep showing error code 7 Segment LED Display State No Display INTERNAL CONTROL FAULT NO POWER On FC FH _F H1 H2 dF Hu ELECTRIC HEAT LOW Heat Demand Back up Heat Demand ELECTRIC HEAT HIGH Heat Demand Back up Heat Demand HUMIDITY RUNNING WITHOUT HEATING Humidificat on Demand Descriptionof Condition STANDBY WAITING FOR INPUTS FAN COOL COMMUNICA...

Page 57: ...ving some minor error code in normal mode 2 digit 7 segment displays show error code and airflow status 4 When the unit is having some minor error code during defrost operation in normal mode 2 digit 7 segment display shows state dF error code and airflow status ...

Page 58: ...earn how to use the mode display DISPLAY The display consists of 2 digits DISPLAY BUTTON LAYOUT The display buttons shown can be used to navigate and select items FAULT CODE HISTORY NAVIGATION This mode will allow the user to see the six most recent system faults Please follow the flow chart to navigate to error codes from screen zero For a list of the fault codes please see the TROUBLESHOOTING ta...

Page 59: ...ll for more than 2 sec Release Fault Recall between 2 to 5 sec Hold Fault Recall for more than 5 sec Flashing Display First Error Code Last Error Code Press Fault Recall for Error Code Press Fault Recall for Error Code Press Fault Recall to complete list Release Fault Recall in less than 2 sec Flashing Display Solid Display 88 for 3 sec before erasing all Diagnostic Codes Second Error Code 0 2 sec...

Page 60: ...ata not on Network No shared data on the network Populate shared data set using memory card d1 E_d1 Invalid Data On Network INVALID DATA Invalid Data on Network Wrong shared data on the network Populate shared data set using memory card d4 E_d4 Invalid Memory Card data INVALID MC DATA Invalid Memory Card Data Wrong memory card data Replace circuit board Rewrite data using the correct memory card b...

Page 61: ...outdoor unit and indoor unit Check for obstruction on the fan motor Check ductwork filter for blockage clean filters Remove obstruction Verify all registers are fully open Check the connections and the rotation of the motor Verify the input voltage at the motor Verify ductwork is appropriately sized for system Resize replace ductwork if needed Replace motor 70 E_70 EEV OPEN CKT EEV disconnection d...

Page 62: ...pressor run time in hours Displays the defrost temperature sensor and outdoor liquid temperature sensor reading Displays the low pressure sensor reading which is taken slightly upstream of the suction accumulator and outdoor suction temperature sensor reading Current system operation mode COOLING COOLING STARTUP HEATING HEATING STARTUP DEFROST OIL RETURN STOP Displays ON or OFF status ON indicates...

Page 63: ...available to permanently engage BOOST MODE SUBMENU ITEM INDICATION USER MODIFIABLE OPTIONS COMMENTS System Verification Test SYSTEMTEST ON or OFF System Verification Test must be run after installation This is approximately a 5 15minute test If the thermostat is set to COOL mode the system will enter CHARGE mode upon completion otherwise it will stop Force Defrost Cycle FORCE DF CYCLE ON or OFF Th...

Page 64: ... range selected in the COOL RPS RANGE menu Select the appropriate compressor RPS for the installed system configuration SUBMENU ITEM USER MODIFIABLE OPTIONS COMMENTS HT Reset YES or NO Selecting to default factory setting Heat Airflow Trim Hi H TR H 15 to 15 in 3 increments Selects the Heating airflow trim amount Heat Airflow Trim Int H TR I 15 to 15 in 3 increments Selects the Heating airflow tri...

Page 65: ...plays The 7 segment displays on indoor control board will display EE 1 HEATING EMERGENCY MODE Emergency Heating mode is to be used when communica tion between the indoor unit and thermostat are not func tioning properly This mode will run the electric heat strips independently of any thermostat in one of two modes High Heat Level or Low Heat Level Dip Switch Bank DS 6 specifically dipswitches S 21...

Page 66: ... 15 15 ON OFF ON ON Sixth X 19 20 20 ON OFF ON OFF Seventh X X X 25 ON OFF OFF ON Heater Kit Selection Heater kW Switch Bank DS 3 Indoor Control Board Settings Dip Switch Setting NOTE Default factory settings are marked with S 21 S 22 OFF OFF ON OFF OFF ON ON ON S 1 S 2 OFF OFF ON OFF OFF ON OFF OFF Switch Bank DS 2 Outdoor Control Board Settings Function Normal operation Emergency Mode Cooling Em...

Page 67: ...s Fan Only Speed During operation the indoor unit will provide constant air flow as selected even if the compressor has stopped The indoor unit will continue to operate the electronic expansion valve for refrigerant super heat control and the compressor will cycle at the interval selected by dip switch bank DS 2 ON time OFF time Avg Run Time Low Cool Level 7 minutes 15 minutes 30 Medium Cool Level...

Page 68: ...EEV Enable 16 OFF No Use 17 ON Emergency EEV Opening 18 OFF Emergency EEV Opening 19 OFF EEV Emergency Mode 20 OFF No Use 21 OFF Emergency mode Cooling Heating Emergency Mode 22 OFF Emergency mode Cooling Heating Emergency Mode 23 OFF No Use 24 OFF No Use 1 ON CT Communication Enable 2 ON CT Communication Enable 1 OFF Cooling Emergency mode 2 OFF Cooling Emergency mode ID DS 5 ID DS 6 OD DS 1 OD D...

Page 69: ...wired when selecting a cooling airflow Note the blower will run continuously with this wiring which is required The outdoor unit will cycle as described in the Cooling Emergency Mode section when appropriate dip switch modes are set 1 2 R C G W1 W2 Y1 Y2 0 DEHUM Indoor Unit Integrated Control Module Note Emergency heating mode is not available with TXV applicable indoor units If communications sti...

Page 70: ...ING MODE 2 o enter any of these modes use the schemes shown in this section Each mode has its own corresponding Screen within the display itself which allows the user to navigate and use the features Example The Fault Code is accessed and displayed from Screen 0 of the 7 segment display The Fault History is accessed and display using Screen 1 of the display etc MODE Fault Code Display Fault Code H...

Page 71: ... This shows the most recent fault To access hold the RECALL button for 5 seconds at screen 0 To access hold the RECALL button for 5 seconds at screen 1 To access hold the RECALL button To access hold the RECALL and TEST buttons simultaneously To return to SCREEN 0 of the display press the LEARN button for 5 seconds at screen 2 for 5 seconds at screen 2 The first digit displays the SCREEN Hold RECA...

Page 72: ...TION SCREEN This mode will allow the user to see the six most recent system faults For a list of the fault codes please see the TROUBLESHOOTING tables in this document 1 SCREEN 0 SCREEN 1 The display will change to SCREEN 1 Displays 2nd most recent Fault code 6th most recent Fault Code Hold RECALL Press RECALL Press RECALL Press RECALL Press RECALL ...

Page 73: ... the setting Press RECALL Press RECALL Item number Display flickers at 1 second intervals Value MONITORING MODE NAVIGATION SCR This screen allows the user to monitor system variables as shown in the tables at the end of this section EEN 2 OFF ON Blink interval 0 4 sec On 0 4 sec Off Hold RECALL Press RECALL Press RECALL Press RECALL ...

Page 74: ...st system settings as shown in the tables at the end of this section SCREEN 0 Press RECALL Press RECALL to increase the value Press TEST to change setting Press RECALL Press TEST to complete setting and return to setting mode SCREEN 2 Press LEARN SCREEN 3 Press RECALL Press RECALL OFF ON Blink interval 0 4 sec On 0 4 sec Off ...

Page 75: ...crease the number Press RECALL Press TEST to change setting Press RECALL Press TEST to complete setting and return to setting mode Press RECALL Press RECALL Press RECALL SCREEN 0 OFF ON Blink interval 0 4 sec On 0 4 sec Off Press RECALL Press RECALL SCREEN 4 Setting Mode 2 allows the user to change system settings See table in back of this section ...

Page 76: ...tart up 2 Heating Start up 3 Oil Return Operation 4 Heating Operation 5 Defrost Operation 6 Cooling Operation 3 Compressor Reduction Mode 0 OFF 1 ON 4 demand unit Cut off the decimal first place 5 act demand unit Cut off the decimal first place 6 Requested ID CFM unit CFM Multiply by 10 7 Reported ID CFM unit CFM Multiply by 10 8 Outdoor FAN TAP 0 Off 1 Low Tap 2 Medium Tap 3 High Tap 9 Ta Outdoor...

Page 77: ... 12 4 3 10 15 5 0 4 Cool Profile 0 A 2 C 1 B 3 D 5 Cool ON Delay 0 5sec 2 20sec 1 10sec 3 30sec 6 Cool OFF Delay 0 30sec 2 90sec 1 60sec 3 120sec 7 Dehumidfication Select 0 ON 1 OFF 8 Heat Airflow Trim High 0 15 6 3 1 12 7 6 2 9 8 9 3 6 9 12 4 3 10 15 5 0 9 Heat Airflow Trim Int 0 15 6 3 1 12 7 6 2 9 8 9 3 6 9 12 4 3 10 15 5 0 10 Heat Airflow Trim Low 0 15 6 3 1 12 7 6 2 9 8 9 3 6 9 12 4 3 10 15 5...

Page 78: ...door Lower 2 Indoor Lower 4 System Verification Test 0 ON 1 OFF 7 Force Defrost Cycle 0 ON 1 OFF 8 Pump Down 0 ON 1 OFF 9 Charge Mode 0 ON 1 OFF 10 Maximum Compressor RPS for Cooling 11 Maximum Compressor RPS for Heating 12 BOOST MODE Selection 0 ON 1 OFF 13 BOOST MODE Temperature 0 105F 1 100F 2 95F 3 90F 4 85F 5 80F 6 75F 7 70F 8 Always ON NOTE Parameters as per factory setting are highlighted i...

Page 79: ...ust if needed Test for system leaks using leak test procedure Check the connection to low pressure sensor Repair replace if needed Check indoor EEV Replace if needed Check indoor EEV coil Replace if needed Check indoor blower motor wiring Repair replace if needed Replace control board if necessary 16 LOW PRESSURE M This error indicates the equipment is experiencing frequent low pressure faults Con...

Page 80: ...ontrol board disconnected Faulty control board Noise Check wiring to control board Repair as needed Replace control board if necessary 32 E32 HI TEMP CTRL1 This error indicates the equipment is experiencing high temperature faults on the outdoor control board Ambient air conditions too high Cooling bracket screw s missing or not properly fastened No or poor thermal grease coating between cooling p...

Page 81: ...ected to power supply as specified on rating plate Correct low line voltage condition Contact local utility if needed 43 E43 HIGH LINE VOLT Control detects a high power supply voltage condition High line voltage supply Verify unit is connected to power supply as specified on rating plate Correct high line voltage condition Contact local utility if needed 44 E44 OP TEMP RANGE The control detects th...

Page 82: ...lace if needed Check the connection to thermistors Repair replace if needed B0 Eb0 NO ID AIRFLOW The estimated airflow from indoor subsystem is near to 0 CFM Failed indoor blower motor Indoor fan motor not properly connected Too much static pressure Check ID fan motor wiring and connectors Repair replace if needed Check ID fan motor Replace if needed B9 Eb9 LOW ID AIRFLOW Estimated airflow from mo...

Page 83: ...etablebelow indicates the LED status and the corresponding potential problem LEARNbutton Usedtoresetthenetwork Depressthebutton for approximately 5 seconds to reset the network TROUBLESHOOTING OUTDOOR UNIT ERROR CODES LED Status Indication Probable Causes Corrective Actions Off Nominal condition None none 1 Flash Communications Failure Unknown packet is received Depress learn bu on 2 Flash Out of ...

Page 84: ... 04 1 89 30 86 16 10 1 64 184 11 4 13 16 13 1 64 35 95 13 04 1 42 147 37 3 95 13 07 1 42 40 104 10 63 1 22 118 68 3 76 10 65 1 22 45 113 8 71 1 04 96 13 3 56 8 73 1 05 50 122 7 18 0 89 78 29 3 34 7 18 0 89 55 131 5 95 0 76 64 10 3 11 60 140 4 96 0 65 52 76 2 87 65 149 4 16 0 56 43 63 2 64 70 158 3 50 0 48 36 26 2 41 75 167 2 96 0 41 30 27 2 18 80 176 2 51 0 35 25 38 1 97 85 185 2 14 0 30 21 37 1 7...

Page 85: ... 9 364 110 0 466 0 128 7 596 148 4 60 8 6 162 57 0 264 87 4 366 110 4 468 0 129 0 600 149 0 62 10 0 164 57 7 266 87 9 368 110 8 470 0 129 3 604 149 5 64 11 3 166 58 4 268 88 4 370 111 2 472 0 129 7 608 150 1 66 12 6 168 59 0 270 88 9 372 111 6 474 0 130 0 612 150 6 68 13 8 170 59 8 272 89 4 374 112 0 476 0 130 3 616 151 2 70 15 1 172 60 5 274 89 9 376 112 4 478 0 130 7 620 151 7 72 16 3 174 61 1 2...

Page 86: ...308 90 88 86 84 82 80 317 92 90 88 86 84 82 326 94 92 90 88 86 84 335 96 94 92 90 88 86 345 98 96 94 92 90 88 354 100 98 96 94 92 90 364 102 100 98 96 94 92 374 104 102 100 98 96 94 384 106 104 102 100 98 96 395 108 106 104 102 100 98 406 110 108 106 104 102 100 416 112 110 108 106 104 102 427 114 112 110 108 106 104 439 116 114 112 110 108 106 450 118 116 114 112 110 108 462 120 118 116 114 112 1...

Page 87: ... LPT HIGH PRESSURE SWITCH HPS DS1 DS2 DIP SWITCH SEG1 SEG3 7 SEGMENT DISPLAY Z1C Z3C FERRITE CORE BS1 BS3 PUSH BUTTON SWITCH RVC REVERSING VALVE COIL M1C COMPRESSOR MOTOR M1F FAN MOTOR NOTE 1 1 OFF ON DS1 1 OFF ON DS2 V W U Z2C COIL CIRCUIT LIQUID LINE DISCHARGE LINE DEFROST COLOR CODE RD RED BR BROWN GR GREEN BK BLACK WH WHITE YL YELLOW BL BLUE GY GRAY PU PURPLE 1 THE POSITION OF THE SELECTOR SWI...

Page 88: ...ST RECENT TO LEAST RECENT DEPRESS FAULT RECALL BUTTON FOR MORE THAN 2 SECONDS WHILE IN STANDBY NO THERMOSTAT INPUTS 6 RED STATUS LED PROVIDES NETWORK STATUS GREEN RX LED INDICATES NETWORK TRAFFIC USE LEARN BUTTON TO RESET NETWORK 7 DISCARD CONNECTOR PL1 WHEN INSTALLING OPTIONAL HEAT KIT 8 THE POSITION OF SELECTOR SWITCHES DS1 DS6 INDICATE FACTORY SETTING 9 REMOVE SHORT RED CIRCUITING WIRE AND PUT ...

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