Heat Controller BG-81G manual

Heat Controller , Inc. • 1900 Wellworth A ve. • Jackson, MI 49203 • (517)787-2100 • www .heatcontroller .com SER VICE MANU AL Thru-the-W all Series with R-410A BG-81G BG-101G BG-103G BG-123G BGE-103G BGE-123G BG-143G[...]

1. PRECAUTION ........................................................................................................................ 2 1.1 Safety precaution ........................................................................................................... 2 1.2 W arning ....................................................................[...]

1. PRECAUTION 1.1 Safety precaution  To prevent injury to the user and property damage, the following instructions must be followed.  Incorrect operation may cause harm or damage.  Before servicing unit, be su re to read this ser v ice manual. 1.2 Warning  Do not use damaged power cords, plugs, or a loose socket.  Always use the powe[...]

2. FEA T URES AND P ANEL 2.1 Features  Slide-in and Top-out chassis for simple in stallation and service (on some models).  Washable one-touch f i lter and easy access panel.  Super compact design.  Reliable and efficie nt rotary compressor.  Fresh air switch (on some models).  Anti-freezing control in coo ling mode. Prevents wate[...]

 Control p anel for cooling and heatin g models: B Panel Note : The control p anels above are represent ative of many available m odels. Y our model may be slightl y dif fe rent. On/Off (On and Off): Press this button once to start the u nit, press again to stop. FAN : Press this button to select appropriate fan speed. Fan S peed mode has four o[...]

TIME R : Press this button to set the time for unit sta rting or stopping. Press or hold the Up ( ▲ ) / Down ( ▼ ) to set the timer time. T urning the unit ON or OF F at any time will cance l the Auto S tart/S top function. CHECK FILTER : This feature is a reminder to clean the Air Filter for more efficient operation. Th e “CHECK FIL TER” l[...]

3. UNIT DIMENSION 3.1 Unit dimension: 4. OPERA TION LIMITS 4.1 Cooling operation Outd oor unit air t emp DB Indoor air temp DB Service Manual Room Air Conditioner with R-410A Heat Controller, Inc. 6[...]

Note : The chart is the result from the continuou s operation under constant air temperature conditions. However, the initial pull-down stage is not included. 4.2 Electric heating operation Indoor air te mp DB Out door air tem p DB Note : The chart is the result from the continuous operation under constant a ir temperature conditions. However, the [...]

5. PROTECTION FUNCTION 5.1 Symbol & Meaning TA: Indoor amb ie n t temperature; TE: Indoor e vapo r ato r temperature; TS: Setting temperature through the remote controller. 5.2 Protecti on Function  3 mi nute compre ssor time d elay The compressor will w a it for 3 minutes before restarting, so as to prevent the pressur e imbalance i n refri[...]

 Fault Code Defect code Defect explanation Ed Evaporator de-frosting defect. AS Indo or ambie nt tempe rature sensor f ailure in heatin g, cooli ng, dry and auto mode. HS DAHT sensor failure in heating mode. LO Senso r disconn ection m alfunct ion in fan on ly mode HI Sensor short circu it malfunction in fan only mode 6. COMPONENT OPERATION &[...]

CHECKING COMPRESSOR EFFICIENCY The reason for compressor inef f iciency is n ormally due to broken or damaged suction an d/or discharge valves, reducing the ab ility of the compressor to pump refrigerant ga s. This condition can be checked as follows: 1. Install a pi ercing valve on the suction and discharge or liquid process tube. 2. Attach gauge [...]

CHECKING THE INTERNAL OVERLOAD (se e Figure 4. ) 1. With no power to unit, remove the leads from the compressor ter mina ls. 2. Using an ohmmeter , test continuity betw een terminals C-S and C-R. If not continuous, the compr essor overload is open and the compressor must be rep laced. F i g u r e 4 : I n t e r n a l o v e r l o a d 6.2 FAN MOTOR A [...]

compressor (HERM) te rminal. A satisfactory capacit or will cause a deflection on the po inter , then gradually m ove back to infinity . 4. Reverse the leads of the probe and momentarily touch the capacitor terminals. The defl ection of the p ointer sh ould be two time s that of the first check if the capacitor is good . 5. Repeat steps 3 and 4 to [...]

6.6 VALVE, DRAIN PAN (se e Figure 7) During the cooling mode of operation, condensate w hich collects in the drain p an is picked up by the condenser fan blade and sprayed onto the condenser coil. This assists in cooling the refrigerant plus evaporating the wate r . During the heating mode of operation, it is necessary that water be removed to prev[...]

HERMETIC COMPONENT REPLACEMENT The following procedure applies when replacing components in the sea led refrigeration circuit or repairing refrigerant leaks. (Compressor , condenser , evaporator , capillary tube, refrigerant leaks, etc.) 1. Recover the refrigerant from the system at the pro cess tube located on the high side of the system by instal[...]

side in small increments wh ile operating the unit. 12. Restart unit se veral times after allow i ng pressures to st abilize. Pinch of f process tube s, cut and solder the ends. Remo ve pinch off tool, and leak check the process tube ends. SPECIAL PR OCEDURE IN THE CASE OF COMPRESSOR MOTOR BURNOUT 1. Re cover all refrig erant an d oil from the syst[...]

7. WIRING DIAGRAM The wiring diagrams listed below are representative of mod els deploye d with full features. Y our model may not offer all these features, accordingly it will slightly diffe r from your wiring diagram in these optional features area. Refer to th e actual wiring diagram included wit your unit.  Wiring Diagra m For TTW Cooling on[...]

Display keeps showing "AS" or "HS". Check the wiring. Correct or re pair the wires. Check the resistance of room te mperature sensor , accordi ng to the chara cteris tic tab le. Replace the m ain control board. Replace the room tem perature sens or . Display keeps showing "LO" or "HI". Replace the room temper[...]

No No The "filter check" lamp is on. Press "filter check" button several time s and check whet her th e problem stops. Replace the main control board . No Bu tto n o f rem ot e co ntro ll er do esn ’t wor k. No Check the power supply . Check whether the voltage of battery is lower than 2.2V . No Check whethe r the failure butt[...]

Operation panel doesn’t wor k. Check the power supply . Press the "LED" button of remote controller several ti m es and check whether the prob lem stops. Check the wiring of display board . Repair the wir ing. Replace the display board. Replace the main control board. Follow me mode doesn’t work. Check the power supply . Press "f[...]

N o N o Display keeps showing "Ed". Check whethe r th e evaporator frosts. No Check whethe r the indoor air inlet is block ed. Check whethe r the indoor ambient temperature is too low . Check whether the indoor dust filter is too dirty . Check whet her there is too much water o n the chassis. Check the wiring of pipe temperature sens or .[...]

Com press or doe sn’t wor k. Check the power supply . Check whethe r the voltage is to o h igh or too low . No Check the wiring. Check whether the compressor is in overlo ad protection mode. Check whether t he relay of compressor in PCB w o rks norm ally (Start the uni t, wait 3 m inutes for the com pr essor to turn on, and set the unit in the co[...]

The fan mot or doesn’t wor k. Check whether the indoor (outdoor) fa n is loc ked. Check the power supply . Check the wiring. Check whether the relays on PCB f o r m otor work normally . Comparing w ith f an m otor spec ification, check the resistance of fan m otor . Replace the fan motor . Cooling mode doesn’t work or not cooling not enough. Ch[...]

The air conditio ner doesn’t work. Check the po wer supply . Check the wiring. Check whether the transformer has failed. Meas ure the ou tput voltage of transformer and check whether it is th e ra nge from +5V to 12V . I f not, replace the transfo rmer . Replace the PCB. The compressor doesn’t stop, a fter the set te mperature is reached. Check[...]

T emperature contr oller doesn’t work or is unstable. Check whethe r the set tem p erature is reached. T est the seve ral higher temperature set points and check whe ther unit works normally . Check the wirin g . Check whether the unit is correctl y installed. Check the tem p erature controlle r . Re p lace if failed. The compressor cycles on/off[...]

W ater drips from the unit. Check whether the ambient hum idit y is too hi g h. Check whether the indoor ou tlet airflow foam is wet if water is dripp ing from the louvers. Check whether the unit is correctl y installed. Check whether the air outlet foam is installed normally . Check whethe r the f oam of evaporator ba se is damaged. Check whethe r[...]

Fan mo t o r speed can’ t change. (E lectric Control) Check the wiring. Check the ca p acitor of f an motor . Re p lace if fai led. Re p lace the PCB. Chec k the resi stance of fan moto r and re p lace the mo tor if failed. N o N o N o N o N o N o N o N o Not heating or not heating enou gh. (Cooling and Electric Heater) Check the mode. Check whet[...]

8.2 General Troubleshooting PROBLEM P OSSIBLE CAUSE REMARK No power Check voltage at electric al outlet . Correct if none. Power supply cord Check voltage at the power cord terminal. Replace the power cord if non e . Wire disconnected or connection loose Connect wire. Refer to wir ing diagram for terminal identification. Repa ir or re p lace loose [...]

PROBLEM P OSSIBLE CAUSE REMARK Air filter Clean or replace if restricted. Vent door Close if open. Unit undersized Determine if the unit is p roperly sized for the area to be cooled or heated. Condenser and Evaporator Clean if restricted. Fan motor Check the fan capacitor and replace if no t within +/-1 0% of manufacturer ’s rating. Room structur[...]

PROBLEM P OSSIBLE CAUSE REMARK No power Check the voltage. Call an electrician if not withi n correc t limits of +/- 10% of nomin al voltage rating required. W ir in g Check terminals. Rep air and c orrect if loose. Temperature setting Check and adjust the thermostat. Main switch setting Check and adjust the main switch setting. Reversing valve wir[...]

8.3 Troubleshooting Cooling PROBLEM POSSIBLE CAUSE TO CORRECT Low voltage. Check for voltage at compressor. 115 volt and 230 volt units wi ll operate at 10% voltag e varian ce Therm ostat not set col d enough or in operativ e. Set th ermostat to coldest position . Test thermostat and replace if ino p e rative. Compressor hums but cuts off on overl [...]

PROBLEM POSSIBLE CAUSE TO CORRECT Fuse blown or circuit tripped. Repl ace fuse, reset breaker. If repeats, check fu se or br eaker si ze. Che ck fo r shorts in unit wiring an d c ompone nts. Power cord not plugged in. Set switch correctly. System sw itch in "Off " positio n. Test for co ntinuity in each switch position. Inoper ative sys t[...]

PROBLEM POSSIBLE CAUSE TO CORRECT Check operation of unit. Replace overload if Overload inoperative. Opens to o soon . system operation is satisfactory. Compresso r attempts to star t, or runs for sho rt periods only. Compressor atte mpts to start before system pressures are equalized. Allow a minimum of 2 minu tes for pressures to equalize before [...]

PROBLEM POSSI B LE CAUSE TO CORRECT Defective motor. Check and replace. Open or shorted capacitor. Replace capacitor and check. Condenser fan frozen to Chassis. Check if drain pan valve is open. If not, replace. Fan motor does n ot operat e in "Constant" speed or "Auto” speed. Loose connections. Check all connections. Check v o lta[...]

9. INST ALLA TION ACCESSOR Y LIST ▌ Part list for CD Series: No. Part No. Part Name Quantity 1 202921890000 Grille(Aluminum) 1 2 201 121890009 Grille(plastic) 1 3 201 121890006 Stuf fer seal 1 4 201 121890007 T rim Frame(side legs) 2 5 201 121890008 T rim Frame(top & bottom legs) 2 10. CHARACTERISTIC OF TEMPERA TURE SENSOR T emp.°F (°C) Res[...]

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