Amana AVXC20 Series Service Instructions Manual Download Page 32 | Manualshive

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SERVICING

32

S

ET

T

HERMOSTAT

TO

C

HECK

SYSTEM STATUS

1. Follow the sequence 1. to 5. of

S

ET

T

HERMOSTAT

TO

A

DJUST

I

NDOOR

A

IR

CFM

TRIM

.

2. Select STATUS.

3. Follow screen for System Status.

TS

Time Stamp (Compressor run time)

MD

Current system operational Mode
(Cooling, cooling startup, oil return, off)

CRM

Compressor Reduction Mode

RAD

Requested and Actual percentage Demand
(Requested Demand, Actual cooling provided)

RAF

Requested and Reported ID airflow
(Requested CFM, Actual CFM)

ATRPM

Outdoor Air Temperature, Outdoor Fan speed
(OD air temperature, OD Fan RPM)

DCT

Discharge Temperature, Outdoor Coil Temperature

DLT

Outdoor Liquid Temperature

PSD

Suction Pressure

S

ET

7-S

EGMENT

M

ODE

D

ISPLAY

TO

PUMP DOWN

Please follow the following sequence to enter PUMP DOWN to
accumulate the refrigerant to outdoor unit.

Do not operate Cool ON mode to enter PUMP DOWN. Before start-
ing the PUMP DOWN operation, change indoor fan trim, delay and
profile back to default and stop electric heater and gas furnace. In
this operation, the gas and liquid service valve should be opened.

1. Set 7-segment display to SCREEN 4 (SETTING MODE 2) Setting

No. 8 and change the 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. At this point, the compressor should start operating. Check

the amperage at the compressor wiring to see the compressor
operation status. Unit displays error code E11 (System Verifi-
cation Test) once the PUMP DOWN operation starts.

3. Close liquid service valve approximately two minutes after

compressor has come on.

4. Compressor will come to a stop automatically. Close the gas

service valve immediately after the compressor stops. After
completion of PUMP DOWN, unit shows error code “E11”.

NOTE:

Refrigerant cannot be collected to the outdoor unit com-

pletely if the system is overcharged or if there is a delay in closing
the liquid service valve and gas service valve. Evacuate the left
over refrigerant from the system using a vacuum pump.

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Summary of Contents for AVXC20 Series

Page 1: ...professionally trained HVAC technicians only The manufacturer does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person 2015 Goodman Manufacturing Company L P is a registered trademark of Maytag Corporation or its related companies and is used under license All rights reserved ...

Page 2: ...he 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 assistance please contact CONSUMER INFORMATION LINE AMANA BRAND PRODUCTS TOLL FREE 1 877 254 4729 U S only email us at customerservice goodmanmfg com...

Page 3: ...d or operated without having the terminal pro tective cover properly in place See Service Section S 17 for proper servicing TO AVOID POSSIBLE EXPLOSION NEVER APPLY FLAME OR STEAM TO A REFRIGERANT CYLINDER IF YOU MUST HEAT A CYLINDER FOR FASTER CHARGING PARTIALLY IMMERSE IT IN WARM WATER NEVER FILL A CYLINDER MORE THAN 80 FULL OF LIQUID REFRIGERANT NEVER ADD ANYTHING OTHER THAN R 410A TO A RETURNAB...

Page 4: ...8 230 V single phase 60 Hz P Painted Tonnage Nominal Expansion Device 024 2 0 ton T Expansion Vavle 036 3 0 ton V Inverter Tuned Expansion Valve 048 4 0 ton 060 5 0 ton Communication C ComfortNetTMCompatible A V X C 20 024 1 A A Brand Engineering A Amana Minor Revision Compressor Engineering V Variable Capacity Major Revision Voltage Type 1 208 230 V single phase 60 Hz X AC R 410A 2 208 240 V sing...

Page 5: ...n Number of turns from SS to tight spring Number of turns from SS to loose spring R22 7 25 4 25 R410A 9 5 2 EXPANSION VALVES R410A 0 6 C turn 1 1 F turn R410A Max 75 C 167 F Number of turns Number of turns from SS to from SS to TIGHT Spring LOOSE Spring R410A 9 5 2 ...

Page 6: ... be set to 1300 cfm speed tap of ON OFF ON Airflow for 5 kW up to 20 kW heater kits shall be set to 1500 cfm speed tap of ON OFF OFF 3 kW heater kit is not applicable for this indoor application ACCESSORIES AVXC20 1 Htr kW 9 10 11 AVPVC24C14 AVPVC36D14A AVPVC48D14 AVPVC60D14 3 ON ON ON 730 850 NR NR 5 ON ON OFF 780 1250 1250 1250 6 ON OFF ON 850 1300 1300 1300 8 ON OFF OFF 950 1500 1500 1500 10 OF...

Page 7: ...AL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A VOM WHILE PAYING ATTENTION NOT TO TOUCH THE CHARGED AREA 4 IMMEDIATELY AFTER MEASURING THE RESIDUAL VOLTAGE DISCONNECT THE CONNECTORS OF THE OUTDOOR UNIT S FAN MOTOR IF THE FAN BLADE ROTATES BY STRONG WIND BLOWING AGAINST IT THE CAPACITOR WILL BE CHARGED CAUSING THE DANGER OF ELECTRICAL SHOCK WARNING Žæ t à ï ª L é ƒRƒ ƒfƒ ƒT Ìi à j Ì i à j ...

Page 8: ... ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE PC BOARD 3 MEASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A VOM WHILE PAYING ATTENTION NOT TO TOUCH THE CHARGED AREA 4 IMMEDIATELY AFTER MEASURING THE RESIDUAL VOLTAGE DISCONNECT THE CONNECTORS OF THE OUTDOOR UNIT S FAN MOTOR IF THE FAN BLADE ROTATES BY STRONG WIND BLOWING AGAINST IT THE CAPACITOR WILL BE CHARGED CAUSI...

Page 9: ... ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE PC BOARD 3 MEASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A VOM WHILE PAYING ATTENTION NOT TO TOUCH THE CHARGED AREA 4 IMMEDIATELY AFTER MEASURING THE RESIDUAL VOLTAGE DISCONNECT THE CONNECTORS OF THE OUTDOOR UNIT S FAN MOTOR IF THE FAN BLADE ROTATES BY STRONG WIND BLOWING AGAINST IT THE CAPACITOR WILL BE CHARGED CAUSI...

Page 10: ...e direction shown in the figure 3 Remove fixing screws B affixing the sheet metal plate 4 Carefully slide the sheet metal plate with the electrical board behind the refrigerant tubing as shown Fixing screw A Cover Refrigerant Tubing Heat sink for cooling fixing screws B Install the electrical board When working on a service port ensure that no refrigerant and or compressor oil is sprayed onto the ...

Page 11: ...r ize at a low temperature The vapors may be drawn off and con densed at a higher pressure and temperature to be used again The indoor evaporator coil functions to cool and dehumidify the air conditioned spaces through the evaporative process taking place within the coil tubes NOTE The pressures and temperatures shown in the refrigerant cycle illustrations on the following pages are for demonstrat...

Page 12: ...ing Diagram 5 Ton Filter Drier Stop Valve Liquid Accumulator Capillary Tube Tl Thermistor Outdoor unit Indoor unit Motor Fan TXV Hex LEGEND Tl Thermistor Outdoor Liquid Temperature Td Thermistor Discharge Temperature Ta Thermistor Outdoor Air Temperature LP sensor Low Pressure Sensor HPS High Pressure Switch Tm Thermistor Outdoor Coil Temperature COOLING CYCLE ...

Page 13: ... stop valve does not fully open X X X X X X Line set restriction X X X X X X X X 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 EEV coil failure X X X X EEV failure X X X High Pressure switch failure X Pressure sensor failure X X X X X X X OD control board failure X Discharge temp sensor failure X X X X X X X X X Coil temp sensor failure X X X X X X X X Defrost ...

Page 14: ...HIGH PRESSURE CONTROL 33 S 13 CHECKING LOW PRESSURE SENSOR 33 S 15A RESISTANCE CHECK 34 S 15B CAPACITANCE CHECK 34 S 17 CHECKING COMPRESSOR 35 S 17A RESISTANCETEST 35 S 17B GROUNDTEST 36 S 26 TESTINGTEMPERATURESENSORS 36 S 40A AVPVCHEATERCONTROL 37 S 50 CHECKING HEATER LIMIT CONTROL S 38 S 52 CHECKINGHEATERELEMENTS 38 S 60 ELECTRIC HEATER OPTIONAL ITEM 38 S 61A CHECKING HEATER LIMIT CONTROL S 39 S...

Page 15: ...sulation and loose connections 2 Use an ohmmeter to check continuity of any suspected open wires 3 If any wires must be replaced replace with comparable gauge and insulation thickness S 3 CHECKING THERMOSTAT AND WIRING THERMOSTAT WIRE SIZING CHART LENGTH OF RUN MIN COPPER WIRE GAUGE AWG 25 feet 18 50 feet 16 75 feet 14 100 feet 14 125 feet 12 150 feet 12 ComfortNet Ready Models Communicating Therm...

Page 16: ... key to unlocking the benefits and features of the ComfortNetsystem Two way digital communications is accomplished using only two wires The thermostat and subsystem controls are powered with 24 VAC Thus a maximum of 4 wires between the equipment and thermostat is all that is required to operate the system CTK04WIRING NOTE A removable plug connector is provided with the control to make thermostat w...

Page 17: ...y exceed 15 minutes if there is an error Refer to the Troubleshooting section Before starting the SYSTEM TEST turn off the electric heater and gas furnace 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 SYSTEM USING COMFORTNET DO NOT INSTALL A TRANSFORMER A C NOTI...

Page 18: ...ord 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 FromtheComfortNetUSERMENU select AIR CONDITIONER NOTE Screen may show air handler or furnace depending on the type of system installed ...

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: ... for both codes to clear SET THERMOSTAT TO CHARGE MODE Please follow the following sequence to enter CHARGE 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 ...

Page 21: ...staller 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 Select AIR CONDITIONER 6 SelectMAINTENANCE ...

Page 22: ...tat is set for FAN or HEAT mode 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 schedule as...

Page 23: ...aximum 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 From the MENU screen select COMFORTNET USER MENU 3 Enter Installer password The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS...

Page 24: ...SERVICING 24 4 Select YES to continue 5 Select AIR CONDITIONER 6 SelectCLRUNVALUES 7 Select COOL RPS RANGE Press COOL RPS RANGE to select the range in which the desired Maximum compressor speed falls ...

Page 25: ...r speed 9 Once Maximum compressor speed is set navigate to HOMEscreen Enternormaloperationwithtemperature 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: ...staller password The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling tothebottom 4 Select YES to continue 5 Select AIR CONDITIONER 6 Select COOL SET UP ...

Page 27: ...C TR H high speed cooling C TR I intermediate speed cooling C TR L low speed cooling Under each criteria a selection between 15 to 15 in the increment of 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 desired ...

Page 28: ...1 Pleasefollowthesequence1 to 6of SET THERMOSTAT TO ADJUST INDOOR AIR CFMTRIM 2 Select COOL AIRFLOW PROFILE COOL ON DELAY or COOL OFF DELAY Check the installation manual of the indoor unit for more details 3 Once COOL AIRFLOW PROFILE COOL ON DELAY or COOL OFF DELAY is set navigate to HOME screen ...

Page 29: ...he gas valve and liquid service valve should be opened NOTE Manufacturer recommends to set PUMP DOWN us ing 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 page 34 1 On the HOME screen select MENU 2 From the MENU screen select COMFORTNET USER MENU 3 Enter ...

Page 30: ...SERVICING 30 4 Select YES to continue 5 Select AIR CONDITIONER 6 SelectMAINTENANCE 7 Select PUMP DOWN ...

Page 31: ...lve 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 PUMP DOW...

Page 32: ...ck to default and stop electric heater and gas furnace In this operation the gas and liquid service valve should be opened 1 Set 7 segment display to SCREEN 4 SETTING MODE 2 Setting No 8 and change the 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 At this poin...

Page 33: ...he contacts of the control open breaking the con trol 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 NOW PRESENT WARNING 3 Start the system in charge mode...

Page 34: ...g unit and CTK04 communicating thermostat constitute a network The three components or subsystems making up the system communicate with one another with information passed between all three components This leads to a somewhat non traditional manner in which the system components receive com mands for system operation All system commands are routed from the component through the network to the appr...

Page 35: ...h the continuousfandemandtotheairhandler Theairhandler inturn sends the demand to the ECM motor The ECM motor delivers the requested continuous fan airflow S 17 CHECKING COMPRESSOR WARNING Hermetic compressor electrical terminal venting can be dangerous When insulating material which supports a hermetic compressor or electrical terminal suddenly disintegrates due to physical abuse or as a result o...

Page 36: ...s in the lead wires 4 If no visual problems indicated carefully remove the leads at the compressor terminals 5 Carefully retest for ground directly between compressor terminals and ground 6 If ground is indicated replace the compressor The resistance reading should be infinity If there is any reading on meter there is some continuity to ground and compressor should be considered defective OHMMETER...

Page 37: ...ck 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 ElectricHeatSequencerOutputs HIGH VOLTAGE Disconnect ALL power before servicing or installing Multiple power sources may be present Failure to do so may cause property damage personal injury or death 1 Turn on power to air handler...

Page 38: ...to do so may cause property damage personal injury or death 1 Disassemble and remove the heating element s 2 Visually inspect the heater assembly for any breaks in the wire or broken insulators 3 Using an ohmmeter test the element for continuity no read ing indicates the element is open Replace as necessary S 60 ELECTRIC HEATER OPTIONAL ITEM Optional electric heaters may be added in the quantities...

Page 39: ...sconnect ALL power before servicing or installing Multiple power sources may be present Failure to do so may cause property damage personal injury or death 1 Remove the wiring from the control terminals 2 Using an ohmmeter test for continuity across the normally closed contacts No reading indicates the control is open replace if necessary IF FOUND OPEN REPLACE DO NOT WIRE AROUND S 61B CHECKING HEA...

Page 40: ...ish charging the system to working pressure then apply the detector to suspect areas If leaks are found repair them After repair repeat the pressure test If no leaks exist proceed to sys tem evacuation S 102 EVACUATION WARNING REFRIGERANT UNDER PRESSURE Failure to follow proper procedures may cause property damage personal injury or death IMPORTANT NOTE Because of the potential damage to compres s...

Page 41: ... calibrated charging cyl inder allow liquid refrigerant only to enter the high side 2 After the system will take all it will take close the valve on the high side of the charging manifold 3 Start the system and charge the balance of the refrigerant through the low side NOTE R410A should be drawn out of the storage container or drum in liquid form due to its fractionation properties but should be F...

Page 42: ...in the valve This type of valve should not be used as a replacement for a 0 bleed valve due to the resulting drop in performance The bulb must be securely fastened with two straps to a clean straight section of the suction line Application of the bulb to a horizontal run of line is preferred If a vertical installation can not be avoided the bulb must be mounted so that the capillary tubing comes o...

Page 43: ...OSSIBLE READINGS 3 The system subcooling should be 7 to 9 F If not in that range adjust subcooling and superheat according to the following procedure a If subcooling and superheat are low adjust TXV to 7 to 9 F superheat then check subcooling NOTE To adjust superheat turn the valve stem clock wise to increase and counter clockwise to decrease b If subcooling is low and superheat is 7 to 9 F add ch...

Page 44: ... 7 596 0 148 4 60 8 6 162 0 57 0 264 0 87 4 366 0 110 4 468 0 129 0 600 0 149 0 62 10 0 164 0 57 7 266 0 87 9 368 0 110 8 470 0 129 3 604 0 149 5 64 11 3 166 0 58 4 268 0 88 4 370 0 111 2 472 0 129 7 608 0 150 1 66 12 6 168 0 59 0 270 0 88 9 372 0 111 6 474 0 130 0 612 0 150 6 68 13 8 170 0 59 8 272 0 89 4 374 0 112 0 476 0 130 3 616 0 151 2 70 15 1 172 0 60 5 274 0 89 9 376 0 112 4 478 0 130 7 62...

Page 45: ...9 88 86 84 82 80 78 308 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 1...

Page 46: ...n line dill valve until the head pressure is reduced to normal 3 Observe the system while running a cooling performance test If a shortage of refrigerant is indicated then the system con tains non condensables S 114 NON CONDENSABLES If non condensables are suspected shut down the system and allow the pressures to equalize Wait at least 15 minutes Com pare the pressure to the temperature of the col...

Page 47: ... Armaflex Metal Sleeve Hanger Wall Stud Liquid Line Strapped to Suction Line Figure 1 1 Installation of Refrigeration Piping From Vertical to Horizontal Outside Wall Inside Wall Liquid Line Suction Line IMPORTANT Refrigerant 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 ...

Page 48: ...TION 3 OUTDOOR UNIT IS ABOVE THE INDOOR UNIT Maximum vertical separation of 200 ft Accounts for pressure losses of any elbows bends etc Maximum line set equivalent length of 250 ft The maximum line set actual length is 200 ft Condenser ABOVE Evaporator 1 Suction line must be sloped continuously towards the indoor unit 2 The maximum elevation vertical difference between the outdoor unit and indoor ...

Page 49: ...y elbows bends etc 1 The maximum elevation vertical difference between the outdoor unit and the indoor unit is 90 feet 2 Suction line must be installed in a manner to prevent liquid migration to the outdoor unit from the indoor unit The 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 ref...

Page 50: ...ion 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 evaporator coil causing condensate leakage Too much air can also cause motor overloading and in many ...

Page 51: ...E TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH WARNING When the system shows error code E51 Eb0 Eb9 and Ed2 outdoor unit is allowed to run the emergency mode disregarding the error code as the temporary solution To set the emergency mode please change DS2 dipswitch in OFF position as below and reboot the outdoor unit In this mode the system repeats a cycle of 8 minutes of cooling op...

Page 52: ...he error message is removed The error will be main tained in the equipment s fault history See FIGURE 15 on the following page for the connection location CIRCULATORBLOWER This air handler is equipped with a variable speed circulator blower This blower provides several automatically adjusted blower speeds The Specification Sheet applicable to your model provides an airflow table showing the relati...

Page 53: ...o not touch ungrounded objects etc Ifyoucomeincontactwithanungrounded object repeat step 2 before touching control or wires 4 Discharge your body to ground before removing a new control from its container Follow steps 1 through 3 if installing the control on a blower Return any old or new controls to their containers before touching any ungrounded object DIAGNOSTIC CHART HIGH VOLTAGE TO AVOID PERS...

Page 54: ...b3 BLOWER MOTOR OPERATING IN POWER TEMP OR SPEED LIMIT b4 BLOWER MOTOR CURRENT TRP OR LOST ROTOR b5 BLOWER MOTOR ROTOR LOCKED b6 OVER UNDER VOLTAGE TRIP OR OVER TEMPERATURE TRIP b7 INCOMPLETE PARAMETER SENT TO MOTOR b9 LOW INDOOR AIRFLOW h1 EMERGENCY HEAT LOW COMMUNICATING MODE ONLY h2 EMERGENCY HEAT HIGH COMMUNICATING MODE ONLY FC FAN COOL COMMUNICATING MODE ONLY FH FAN HIGH COMMUNICATING MODE ON...

Page 55: ...kits specified in shared data set HTR TOO SMALL EC Heater kit selected via dipswitches is too small for heater kits in shared data set Verify electric heat dipswitch settings Verify the installed electric heater is valid for the air handler blower Check nameplate or Specification Sheet applicable to your model for allowable heater kit s Verify shared data set is correct for the specific model Re p...

Page 56: ...ndler message d0 Data not yet on network NO NET DATA d0 Air handler blower does not contain any shared data Populate shared data set using memory card Turn power OFF prior to repair Use memory card for the specific model Insert memory card BEFORE turning power ON Memory card may be removed after data is loaded Error code will be cleared once data is loaded Turn power off before removing memory car...

Page 57: ...wer motor horse power MOTOR MISMATCH b2 Incorrect circulator blower motor in air handler blower Incorrect shared data set in integrated control module Verify circulator blower motor horse power is the same specified for the specific air handler blower model Replace is necessary Verify shared data set is correct for the specific model Re populate data using correct memory card if required Turn powe...

Page 58: ... temperatures Check power to air handler blower Verify line voltage to blower is within the range specified on the air handler blower rating plate See Installation Instructions for installation requirements Turn power OFF prior to repair Air handler blower fails to operate Integrated control module LED display provides indicated error code ComfortNet thermostat Call for Service icon illuminated Co...

Page 59: ... temperatures Check power to air handler blower Verify line voltage to blower is within the range specified on the air handler blower rating plate See Installation Instructions for installation requirements Turn power OFF prior to repair Air handler blower fails to operate Integrated control module LED display provides indicated error code ComfortNet thermostat Call for Service icon illuminated Co...

Page 60: ...it is more than 15 ft below the indoor unit select OUTDOOR LOWER If the outdoor unit is more than 15 ft above the indoor unit select INDOOR LOWER Displays the air conditioner inverter software version Displays the discharge temperature and outdoor coil temperature sensor readings STATUS Displays the air conditioner control software version Displays MODULATING for the inverter based unit Provides c...

Page 61: ...crements Selects the cooling airflow trim amount Cool Airflow Trim Low C TR L 15 to 15 in 3 increments Selects the cooling airflow trim amount Cool Airflow Profile A B C or D Selects the cooling airflow profile Cool ON Delay 5 10 20 30 seconds Selects the indoor blower ON delay Cool OFF Delay 30 60 90 120 seconds Selects the indoor blower OFF delay Dehumidification Select ON or OFF Selecting OFF d...

Page 62: ...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 Zero of the 7 segment display The Fault History is accessed and display using Screen One of the display etc FAULT CODE FAULT HISTORY MONITORING SETTING MODE 1 SETTING MODE 2 MODE Fault Code Display Fault Cod...

Page 63: ...the display This shows the most recent fault To access hold the RECALL button from screen zero 5 seconds To access hold the RECALL button from screen one 5 seconds To access hold the RECALL button from screen two 5 seconds To access hold the RECALL and TEST buttons simultaneously 5 seconds To return to SCREEN ZERO of the display press the LEARN button The first digit displays the SCREEN Hold RECAL...

Page 64: ...EN ONE 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 SCREEN ZERO SCREEN ONE The display will change to SCREEN ONE Displays 2nd most recent Fault code 6th most recent Fault Code Hold RECALL Press RECALL Press RECALL Press RECALL Press RECALL ...

Page 65: ...he setting Press RECALL Press RECALL Item number Display flickers at 1 second intervals Value MONITORING MODE NAVIGATION SCREEN TWO This screen allows the user to monitor system variables as shown in the tables at the end of this section OFF ON Blink interval 0 4 sec On 0 4 sec Off Hold RECALL Press RECALL Press RECALL Press RECALL ...

Page 66: ...m settings as shown in the tables at the end of this section SCREEN ZERO 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 TWO Press LEARN SCREEN THREE Press RECALL Press RECALL OFF ON Blink interval 0 4 sec On 0 4 sec Off ...

Page 67: ...se 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 ZERO OFF ON Blink interval 0 4 sec On 0 4 sec Off Press RECALL Press RECALL SCREEN FOUR Setting Mode 2 allows the user to change system settings See table in back of this section ...

Page 68: ...tim e unit hr Multiply by 200 2 Operation code 0 Stop 1 Cooling Start up 3 Oil Return Operation 6 Cooling Operation 3 Com press or Reduction Mode 0 OFF 1 ON 4 dem and unit Cut off the decim al first place 5 act dem and unit Cut off the decim al first place 6 Reques ted ID CFM unit CFM Multiply by 10 7 Reported ID CFM unit CFM Multiply by 10 8 Outdoor FAN RPM unit RPM Multiply by 10 9 Ta Outdoor Ai...

Page 69: ... ON Delay 0 5 sec 2 20 sec 1 10 sec 3 30 sec 6 Cool OFF Delay 0 30 sec 2 90 sec 1 60 sec 3 120 sec 7 Dehumidfication Select 0 ON 1 OFF SCREEN 4 SETTINGMODE 2 Setting No Contents Setting Notes 2 Set Maximum Current N A Future Use 3 Vertical Rise 0 Same Level 1 Outdoor Lower 2 Indoor Lower 4 System Verification Test 0 ON 1 OFF 8 Pump Down 0 ON 1 OFF 9 Charge Mode 0 ON 1 OFF 10 Maximum Compressor RPS...

Page 70: ...replace if needed Check the adjustment of TXV Replace if needed Check indoor blower motor wiring Repair replace if needed Replace control board if necessary 17 E17 COMPRESSOR FAIL This error indicates the equipment is experiencing frequent compressor faults Stop valve not completely open The compressor wire is lost phase Compressor motor failure Check the opening of stop valve should be full open ...

Page 71: ...n the outdoor control board Control has determined continued operation is acceptable This indicates they may be a problem with the equipment Ambient air conditions too high Cooling bracket screw s missing or not properly fastened 2 4 ton only No or poor thermal grease coating between cooling plumbing and cooling bracket on control board 2 4 ton only Outdoor fan low speed 5 ton only No flow or limi...

Page 72: ...e This indicates they may be a problem with the equipment Discharge thermistor inoperable or improperly connected Discharge thermistor is put on incorrect position or off Low refrigerant charge Overcharge Faulty compressor Check discharge thermistor resistance and connections Repair replace as needed Check discharge thermistor position Check refrigerant charge level Adjust if needed Check refriger...

Page 73: ...sh Communications Failure Unknown packet is received Depress learn bu on 2Flash Out of box reset Control power up Learn bu on depressed None Off No power Communications error No power to Outdoor unit Open fuse Communica on error Check circuit breakers and fuses Replace if needed Reset network by depressing learn bu on Check communica on wires data 1 data 2 wires Replace if needed 1Steady Flash No ...

Page 74: ...0 86 16 10 1 64 16 10 1 64 184 11 4 13 16 13 1 64 35 95 13 04 1 42 13 04 1 42 147 37 3 95 13 07 1 42 40 104 10 63 1 22 10 63 1 22 118 68 3 76 10 65 1 22 45 113 8 71 1 04 8 71 1 04 96 13 3 56 8 73 1 05 50 122 7 18 0 89 7 18 0 89 78 29 3 34 7 18 0 89 55 131 5 95 0 76 5 95 0 76 64 10 3 11 60 140 4 96 0 65 4 96 0 65 52 76 2 87 65 149 4 16 0 56 4 16 0 56 43 63 2 64 70 158 3 50 0 48 3 50 0 48 36 26 2 41...

Page 75: ... TO INDOOR UNIT X17A HPS E1 HR1 HR3 BR WH HR2 HR4 X32A X851A POWER CONDITIONER X12A LIQUID LINE DISCHARGE LINE GR RD Z3C RD BK PU GROUND LUG V W U COLOR CODE RD RED BR BROWN GR GREEN BK BLACK WH WHITE YL YELLOW BL BLUE GY GRAY PU PURPLE NOTE 1 1 OFF ON SEE NOTE 3 SEE NOTE 3 2 X52A SHARE DATA Z4C BS1 BS2 BS3 COIL CIRCUIT RD YL GR M1C M1F THERMISTOR TEMPRATURE SENSOR MOTOR HIGH LOW PRESSURE TRANSDUC...

Page 76: ... L TO INDOOR UNIT X17A HPS E1 HR1 HR3 BR WH HR2 HR4 X32A X851A POWER CONDITIONER X12A LIQUID LINE DISCHARGE LINE GR RD Z3C RD BK PU GROUND LUG V W U COLOR CODE RD RED BR BROWN GR GREEN BK BLACK WH WHITE YL YELLOW BL BLUE GY GRAY PU PURPLE NOTE 1 1 OFF ON SEE NOTE 3 SEE NOTE 3 2 X52A SHARE DATA Z4C BS1 BS2 BS3 COIL CIRCUIT RD YL GR M1C M1F THERMISTOR TEMPRATURE SENSOR MOTOR HIGH LOW PRESSURE TRANSD...

Page 77: ... HPS RD RD BL M1C BK RD YL M1F BK WH RD RD L2B L1B BK NOISE FILTER BOARD L2A L1A BK RD L1C L2C TERMINAL BLOCK FIELD WIRING H LPT GND INVERTER BOARD COMPRESSOR TERMINAL ORIENTATION X32A X108A GR Z1C Z2C Z3C X12A COIL INLET LIQUID LINE DISCHARGE LINE U V W 1 OFF ON DS2 2 NOTE 1 BS1 BS2 BS3 X111A FIN THERMISTOR X52A SHARE DATA NOTE 1 1 OFF ON DS1 2 X98A RING COLOR RD YL GY BK THERMISTOR TEMPRATURE SE...

Page 78: ... INDOOR UNIT X17A HPS E1 HR1 HR3 BR WH HR2 HR4 X32A X851A POWER CONDITIONER X12A LIQUID LINE DISCHARGE LINE GR RD Z3C RD BK PU GROUND LUG V W U COLOR CODE RD RED BR BROWN GR GREEN BK BLACK WH WHITE YL YELLOW BL BLUE GY GRAY PU PURPLE NOTE 1 1 OFF ON SEE NOTE 3 SEE NOTE 3 2 X52A SHARE DATA Z4C BS1 BS2 BS3 COIL CIRCUIT RD YL GR M1C M1F THERMISTOR TEMPRATURE SENSOR MOTOR HIGH LOW PRESSURE TRANSDUCER ...

Page 79: ... COLOR CODE RD RED BR BROWN GR GREEN BK BLACK WH WHITE YL YELLOW BL BLUE CURRENT SENSOR X12A COIL CIRCUIT LIQUID LINE DISCHARGE LINE X101A NOTE 1 1 OFF ON DS2 2 1 THE POSITION OF THE SELECTOR SWITCHES DS1 INDICATE FACTORY SETTING 2 MOTOR OVERLOAD PROTECTION PROVIDED BY INVERTER SEE TABLE 3 USE COPPER CONDUCTORS ONLY NOTES BS1 BS2 BS3 THERMISTOR TEMPRATURE SENSOR MOTOR HIGH LOW PRESSURE TRANSDUCER ...

Page 80: ...99A HPS RD RD BL M1C BK RD YL M1F BK WH RD RD L2B L1B BK NOISE FILTER BOARD L2A L1A BK RD L1C L2C TERMINAL BLOCK FIELD WIRING H LPT GND INVERTER BOARD COMPRESSOR TERMINAL ORIENTATION X32A X108A GR Z1C Z2C Z3C X12A COIL INLET LIQUID LINE DISCHARGE LINE U V W 1 OFF ON DS2 2 NOTE 1 BS1 BS2 BS3 X111A FIN THERMISTOR X52A SHARE DATA NOTE 1 1 OFF ON DS1 2 X98A RING COLOR RD YL GY BK THERMISTOR TEMPRATURE...

Page 81: ...L 1 BK 3 M1 W1 RD L2 8 9 R2 HTR2 5 M2 W1 1 M4 BK C L1 8 TWO 2 ELEMENT ROWS RD DEHUM TX 3 BL TWO STAGE INTEGRATED CONTROL MODULE TL 3 GND TL NOTE WHEN INSTALLING HEATER KIT ENSURE SPEED TAP DOES NOT EXCEED MINIMUM BLOWER SPEED MBS SPECIFIED FOR THE AIRHANDLER HEATER HTR2 BL R 6 HEAT SEQUENCER R2 RD TRANSFORMER RD FL YL M7 24 V THERMOSTAT CONNECTIONS 2 HEAT SEQUENCER R1 GN 7 WH TR BK RD FL 2 FL L2 B...

Page 82: ...2 W1 1 M4 BK C L1 8 TWO 2 ELEMEN TROWS R D DEHUM TX 3 BL TWO STAGEINTEGRATEDCONTROLMODULE TL 3 GND TL NOTE WHEN INSTALLING HEATER KIT ENSURE SPEED TAP DOES NOT EXCEED MINIMUM BLOWER SPEED MBS SPECIFIED FOR THE AIRHANDLER HEATER HTR2 BL R 6 HEA T SE QUENCERR2 RD TRANSFOR MER R D FL YL M7 24 V THERMOSTAT CONNECTIONS 2 HEA TSE QUENC ERR1 GN 7 WH TR BK RD FL 2 FL L2 BLWR 8 HTR 1 BK BK YL EQUIPMENTGND ...

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