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PROBLEM

POSSIBLE CAUSE

TO CORRECT

Check operation of unit. Replace overload if

Overload inoperative. Opens too
soon.

system operation is satisfactory.

Compressor
attempts to
start, or runs
for short
periods only.

Compressor attempts to start
before system pressures are
equalized.

Allow a minimum of 2 minutes for pressures
to equalize before attempting to restart.

Cycles on
overload.

Low or fluctuating voltage.

Check voltage with unit operating. Check for
other appliances on circuit. Air conditioner
should be on separate circuit for proper
voltage, and be fused separately.

8.4 Troubleshooting Heating

(Cooling/Electric Heater Models)

PROBLEM P

OSSIBLE CAUSE

TO CORRECT

Heater relay or contactor coil open. Check continuity of coil. Inspect, test

continuity with ohmmeter.

Heater relay or contactor stuck
open, pitted or burned.

Check continuity – if open, replace.

High limit control open.

Check continuity. Check reason for failure.

Open thermal fuse.

Check voltage across heater terminals.

Open or shorted element.

Check amperage draw of heater.

Fan
Operates –
heating
element does
not come on.

Loose connections.

Tighten all terminals.

Restricted filter.

Clean as recommended in Owner’s Manual.

Cycling high limit control.

Control is set to open at 155°F± 5°F (68.3°C
+/- 15°C) and close at 130°F± 8°F (54.4°C +/-
13°C). If cycling prematurely, replace control.

Heating
inadequate.

Exhaust or fresh air door open.

Check position of fresh air door control slide.
Adjust cable if door does not close properly.

Fan relay contacts open.

Check continuity of fan relay.
NOTE: Some models have fan relay energized
during heating cycle while others do not.

Inoperative system switch.

Check connections on system switch and
fan relay.

Fan operates
in "Constant"
speed, but
not in "Auto"

Loose connection.

Check connections on system switch and
fan relay.

Heat anticipator (resistor)
shorted.

Disconnect power to unit. Remove resistor
from thermostat bulb block. Plug in unit and
allow to operate. Feel resistor for heat. If no
heat is felt, replace resistor.

Long "off"
and "on"
cycles.

Defective temperature sensor.

Replace temp. sensor and check operation.

Service Manual

Room Air Conditioner with R-410A

Heat Controller, Inc.

32

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Содержание BG-101G

Страница 1: ...Heat Controller Inc 1900 Wellworth Ave Jackson MI 49203 517 787 2100 www heatcontroller com SERVICE MANUAL Thru the Wall Series with R 410A BG 81G BG 101G BG 103G BG 123G BGE 103G BGE 123G BG 143G ...

Страница 2: ...TING 9 6 1 COMPRESSORS 9 6 2 FAN MOTOR 11 6 3 CAPACITOR RUN 11 6 4 THERMOSTAT ADJUSTMENT 12 6 5 HEATING ELEMENT See Figure 6 12 6 6 VALVE DRAIN PAN see Figure 7 13 6 7 SEALED REFRIGERATION SYSTEM REPAIRS 13 7 WIRING DIAGRAM 15 8 TROUBLESHOOTING 17 8 1 Flow Chart 17 8 2 General Troubleshooting 27 8 3 Troubleshooting Cooling 30 8 4 Troubleshooting Heating Cooling Electric Heater Models 32 9 INSTALLA...

Страница 3: ... the plug to remove the cord from the outlet Do not touch it with wet hands Do not place a heater or other appliance near the power cable Do not allow water to run into electrical parts Do not store or use flammable gas or combustibles near the air conditioner Unplug the unit if strange sounds odors or smoke comes from it 1 3 Caution Use a soft cloth to clean the unit Do not use harsh detergents s...

Страница 4: ...tart function Time delay safety for compressor Restart approx 3 minutes after the power failure Auto mode in heating mode Operation mode can be automatically set by the room temperature Sleep mode Self diagnosis function Filter check sensor after 250 hours Auto cool function Follow me function optional Ionizer function optional Silver ion filter optional Alternate between Celsius or Fahrenheit tem...

Страница 5: ...matically maintained anywhere between 62 F 17 C and 86 F 30 C MODE Press this button to select operation mode Each time you press the button the operation mode is selected in a sequence that goes from Auto Cool Dry and Fan for cooling only models and Auto Cool Dry Heat and Fan for electric heating models ENERGY SAVER Press this button to activate energy saving This feature can only function in coo...

Страница 6: ...n to confirm that the filter has been cleaned and the light will go off FOLLOW ME OPTIONAL Press the button on the remote controller to activate this feature which serves as a remote thermostat allowing for the precise temperature control at its location rather than using the thermostat sensor in the unit s display Clean Air OPTIONAL Press this button to start the Clean Air feature press again to ...

Страница 7: ...3 UNIT DIMENSION 3 1 Unit dimension 4 OPERATION LIMITS 4 1 Cooling operation Outdoor unit air temp DB Indoor air temp DB Service Manual Room Air Conditioner with R 410A Heat Controller Inc 6 ...

Страница 8: ...ull down stage is not included 4 2 Electric heating operation Indoor air temp DB Outdoor air temp DB Note The chart is the result from the continuous operation under constant air temperature conditions However the initial pull down stage is not included Service Manual Room Air Conditioner with R 410A Heat Controller Inc 7 ...

Страница 9: ...e compressor will restart and the antifreeze function will be cancelled Note If the compressor stops operation the time will be cleared If the fan motor turns to High speed or the indoor ambient temperature gets over 78 8 F 26 the time will keep inactive not be cleared Anti frosting protection and defect at cooling or dry mode After compressor runs for 3 minutes if TE is less than 5 F 15 for the s...

Страница 10: ...re internally spring mounted and externally mounted on rubber isolators COMPRESSOR WINDING TEST See Figure 1 Remove compressor terminal box cover and disconnect wires from terminals Using an ohmmeter check continuity across the following 1 Terminal C and S no continuity open winding replace compressor 2 Terminal C and R no continuity open winding replace compressor 3 Terminal R and S no continuity...

Страница 11: ...pressor temperature High motor temperature or amperage heats the disc causing it to open and break the circuit to the common motor terminal Figure 3 External overload Heat generated within the compressor shell is usually due to 1 High amperage 2 Low refrigerant charge 3 Frequent recycling 4 Dirty condenser TERMINAL OVERLOAD TEST Compressor External Type 1 Remove overload 2 Allow time for overload ...

Страница 12: ...bes on White wire and common terminal of capacitor Motor should run at low speed 6 Apply live test cord probes on each of the remaining wires from the speed switch or system switch to test intermediate speeds 6 3 CAPACITOR RUN A run capacitor is wired across the auxiliary and main winding of a single phase permanent split capacitor motor such as the compressor and fan motor A single capacitor can ...

Страница 13: ...d a heater limit switch The fuse link is in series with the power supply and will open and interrupt the power when the temperature reaches 183 2 F 84 C or 199 4 F 93 C depending on series model or a short circuit occurs in the heating element Once the fuse link separates a new fuse link must be installed NOTE Always replace with the exact replacement The heater element has a high limit control Th...

Страница 14: ...ure rises above 40 F 4 4 C to fully close at 68 F 20 C 6 7 SEALED REFRIGERATION SYSTEM REPAIRS EQUIPMENT REQUIRED 1 Voltmeter 2 Ammeter 3 Ohmmeter 4 E P A Approved Refrigerant Recovery System 5 Vacuum Pump capable of 200 microns or less vacuum 6 Acetylene Welder 7 Electronic Halogen Leak Detector G E Type H 6 or equivalent 8 Accurate refrigerant charge measuring device such as a Balance Scales 1 2...

Страница 15: ...m when making these connections 6 Pressurize system to 30 PSIG with proper refrigerant and boost refrigerant pressure to 150 PSIG with dry nitrogen 7 Leak test complete system with electric halogen leak detector correcting any leaks found 8 Reduce the system to zero gauge pressure 9 Connect vacuum pump to high side and low side of system with deep vacuum hoses or copper tubing Do not use regular h...

Страница 16: ...ubleshooting and servicing rotary compressors is the same as on the reciprocating compressor with only a few exceptions 1 Because of the spinning motion of the rotary the mounts are critical If vibration is present check the mounts carefully 2 The electrical terminals on the rotary are in a different order than the reciprocating compressors The terminal markings are on the cover gasket Use your wi...

Страница 17: ...all these features accordingly it will slightly differ from your wiring diagram in these optional features area Refer to the actual wiring diagram included wit your unit Wiring Diagram For TTW Cooling only models Wiring Diagram For TTW Cooling and Heating models Service Manual Room Air Conditioner with R 410A Heat Controller Inc 16 ...

Страница 18: ...1 C 90 F or lower than 16 C 60 F Replace the control board Check the resistance of room temperature sensor according to the characteristic table 8 TROUBLESHOOTING In general problems are classified by three types One is called Starting Failure which is caused from an electrical defect another is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application a...

Страница 19: ... Check whether the failure button is locked by button holder Yes Replace with new batteries No Check the wiring No Check whether the transformer damaged open circuit or short circuit Yes Replace the transformer No Check whether other modes work normally Replace the display board Replace the main control board Check whether the buttons on the unit work normally Yes Replace the remote controller No ...

Страница 20: ...ow me mode doesn t work Check the power supply Press follow me button several times and check whether this mode can work Pay attention to the position of Remote controller Check w hether other functions of r emote work or not Replace the display board Replace the main control board Check the batteries Replace it if failed Replace the remote controller No No No Yes No No No No No Yes No Service Man...

Страница 21: ...temperature is too low Check whether the indoor dust filter is too dirty Check whether there is too much water on the chassis Check the wiring of pipe temperature sensor Check the pipe temperature sensor Replace the pipe temperature sensor Replace the main control board No No No Service Manual Room Air Conditioner with R 410A Heat Controller Inc 20 ...

Страница 22: ...in the cool mode and 26 F 17 C Then check the output of relay and replace the PCB if failed Check whether the external protector works normally Remove t he overl oad p rotector a nd cool t o normal temperature Then che ck whether it is open circuit Replace if failed Comparing with compressor specification check the resistance of compressor Replace the compressor No Check whether the indoor tempera...

Страница 23: ...otor Replace the fan motor Cooling mode doesn t work or not cooling not enough Check the operation mode Check the set temperature Check whether the filter is dirty clogged Start t he unit in t he cool m ode and check w hether the temperature of compressor s discharge pipe is between 176 F 80 to 194 F 90 If no recharge refrigerant Replace the capillary tube No No No No No Service Manual Room Air Co...

Страница 24: ... not replace the transformer Replace the PCB The compressor doesn t stop after the set temperature is reached Check the wiring Check whether the unit can turn off using the remote controller Check whether all te mperature sensors a re n ormal comparing with the resistance table If not replace the sensor Replace the PCB No No No No No No Service Manual Room Air Conditioner with R 410A Heat Controll...

Страница 25: ...ontroller Replace if failed The compressor cycles on off frequently Check whether the airflow is blocked Check if the fan motor isn t working Check whether capacitor of compressor is working normally Check whether the relay of compressor on PCB works normally Replace the PCB Check whether the capillary tube is blocked Replace the capillary Replace the compressor No No No No No No No No No No No Se...

Страница 26: ...k whether the foam of evaporator base is damaged Check whether the drain passage of evaporator is blocked Replace if failed Temperature controller interrupts frequently Check whether the set temperature is reached Check the wiring Check whether the compressor is in the protection mode or 3 minute time delay Check the specification of temperature controller Replace if failed No No No No No No No No...

Страница 27: ...ic Heater Check the mode Check whether the airflow speed is too low Check the specification of PTC heater Check the heat load of the room Fan motor speed can t change Mechanical Control Check whether the selector is damaged Check whether the ca pacitor of fan motor is in the rang e from 95 to 105 of rated capacity Replace the capacitor if failed Check the resistance of fan motor and replace if fai...

Страница 28: ...tor if motor shaft do not rotate Check voltage Call an electrician if not within limits Test capacitor Replace if not within 10 of manufacturer s rating Check bearings Replace the motor if the fan blade cannot rotate freely Fan motor runs intermittently Cycles on overload Pay attention to any change from high speed to low speed Replace the motor if the speed does not change Fan Replace the fan if ...

Страница 29: ...ube and ensure the evaporating temperature is appropriate if the evaporator is frosted Replace if blocked Repair joint if leaking Compressor The inlet and outlet valve of the compressor may be damaged making the low pressure connected with the high pressure The refrigerating system can not produce high pressure and low pressure Replace the compressor after checking for the reason of failure Heat s...

Страница 30: ...ct Main switch failure Check and replace the main switch if failed Capacitor Discharge capacitor before testing Check the capacitor Replace if not within 10 of manufacturer s rating Replace if shorted open or damaged Thermostat Check the thermostat setting if not at the coolest in cooling mode or the warmest in heating mode Try adjusting these settings Compressor will not run while fan motor runs ...

Страница 31: ...inoperative Broken loose or incorrect wiring Refer to applicable wiring diagram Open capacitor Test capacitor and replace if inoperative Fan speed switch open Test switch and replace if inoperative Fan motor does not run Inoperative fan motor Test fan motor and replace if inoperative Be sure internal overload has had time to reset Undersized unit Refer to Sizing Charts Thermostat open or inoperati...

Страница 32: ... or obstructed coil clean as required or remove obsticales Inoperative thermostat Test for shorted thermostat or stuck contacts Short of refrigerant De ice coil and check for leak Inoperative fan motor Test fan motor and replace if inoperative Evaporator coil freezes up Partially restricted capillary De ice coil Check temperature differential across coil Touch test coil return bends for same tempe...

Страница 33: ...pen or shorted element Check amperage draw of heater Fan Operates heating element does not come on Loose connections Tighten all terminals Restricted filter Clean as recommended in Owner s Manual Cycling high limit control Control is set to open at 155 F 5 F 68 3 C 15 C and close at 130 F 8 F 54 4 C 13 C If cycling prematurely replace control Heating inadequate Exhaust or fresh air door open Check...

Страница 34: ...speed Loose connections Check all connections Check voltage to fan motor Fuse link Check fuse link for continuity If defective replace Heating element shorted Check amperage draw of element If no amperage replace Incorrect wiring Check voltage to element If voltage is okay check wiring Unit does not heat Heat relay or heater contactor coil open Defective coil Test coil for continuity Service Manua...

Страница 35: ...8 4 2 39 8239 77 25 10 0000 125 6 52 3 1918 30 2 1 37 1988 78 8 26 9 5507 127 4 53 3 0707 32 0 35 2024 80 6 27 9 1245 129 2 54 2 959 33 8 1 33 3269 82 4 28 8 7198 131 55 2 8442 35 6 2 31 5635 84 2 29 8 3357 132 8 56 2 7382 37 4 3 29 9058 86 30 7 9708 134 6 57 2 6368 39 2 4 28 3459 87 8 31 7 6241 136 4 58 2 5397 41 5 26 8778 89 6 32 7 2946 138 2 59 2 4468 42 8 6 25 4954 91 4 33 6 9814 140 60 2 3577...

Страница 36: ...04 2009 03 2010 ...

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