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18

 

 
15. TROUBLE

 

SHOOTING 

 

TROUBLE

 

REASON

 

ACTION

 

After batteries have been placed 
into the remote control, the 

display is not lit. 

Batteries are exhausted or have 
the wrong polarity. 

Replace batteries or check 
polarity. 

When pressing the recessed 

clock adjustment button, hour 
figures on display do not flash. 

Recessed button has not been 

pressed correctly. 

Press with a round point, avoid 

exerting strong pressure 

Recessed button for time 

setting is blocked due to 
excessive pressure during use. 

Check and repair. 

When pressing any button, all 

symbols appear on display. 

Remote control has been 

irreversibly damaged. 

Replace with a new one. 

Main switch is OFF. 

Switch it to ON position. 

Remote control batteries are 
exhausted. 

Replace batteries. 

Remote control has not been 

pointed correctly to the receiver 
of indoor unit. 

Turn remote control OFF and 

repeat the operation in the 
correct direction. 

There are obstacles (curtains, 
walls, etc.) between the remote 

control and the indoor unit  

Repeat the operation after 
having removed the obstacles. 

Receiver on the indoor unit or 
the remote control is under 

intense sun radiation. 

Avoid direct sun on the unit, 
shut curtains or shades. 

When pressing start button, unit 
does not acknowledge signal 

with a beep. 
 

OR 

 

When pressing stop button, unit 

does not acknowledge signal 
with a beep. 

 

OR 

 
When pressing any function 

button, the remote control 
shows the function requested 

on the display, but unit does not 
acknowledge signal receipt with 

a beep and does not carry out 
the function. 

 

Signal transmission is 
obstructed by severe 

interference from an 
electromagnetic field. 

Avoid sending signals when 
computers or household 

appliances (Food processors, 
coffee makers, etc.) are 

operating close by cellular or 
cordless telephones may also 

interfere with the control. 

Main supply switch is OFF 

Switch to ON 

Fuses or main switch are blown  Replace fuses 
Protection against frequent 
compressor cycling is ON 

Wait for 3 minutes. 

Air conditioner will not start. 

Selected temperature is higher 

than the room temperature in 
the cooling mode (or lower in 

the heating mode). 

Correct selected temperature. 

 

Summary of Contents for 38QG15-H

Page 1: ...03502566 SERVICE MAINTENANCE MANUAL Revision 0 2009 Specifications are subject to change without notice according to Carrier Policy of continuous development...

Page 2: ...ectrical Connections Matching 7 10 Refrigeration Cycle 53QG Series 8 11 Replacing Batteries of Remote Control 10 12 Emergency Operation of Air Conditioner 11 13 Standard and Optional Air Filters 12 14...

Page 3: ...n the owner s manual 3 Failure due to Accident Weather Natural catastrophe accident due to bad weather Hail Storm Sand Storm lightning Flooding Acid Rain and Air Borne fallout etc 4 Failure due to dam...

Page 4: ...er 2 Operating status leds 6 Supply air outlet 3 Supply air flap 7 Characteristics nameplate 4 Air return grille 8 Inter connecting tubing 5 Air filter behind return grille 9 Condensate drain line Flo...

Page 5: ...ary LG Indoor Unit Outdoor Unit Compressor Model P N Model P N Type Supplier 42VMC14 C 46303293 38QG15 C 46302110 Rotary Mitsushita 42VMC18 C 46303294 38QG18 C 46303517 Rotary Mitsushita COOL ONLY 42V...

Page 6: ...Unit Power Control cable Outdoor Unit Indoor Unit P N 02500893 Set of 2 To electrically connect between circuit breaker outdoor and indoor units Optional set of air filters Carbon air filter Photo ca...

Page 7: ...tdoor unit in very low ambient temperature After completion of defrosts cycle the system will normally operate 7 SYSTEM SAFETY PROTECTION 7 1 FOR HEAT PUMP SYSTEM PROTECTION TYPE PROTECTION EFFECT OPE...

Page 8: ...6 8 WIRING DIAGRAMS...

Page 9: ...7 WIRING DIAGRAMS Cont...

Page 10: ...power supply to the outdoor unit and then get the power required for the indoor unit from the outdoor unit Refer to wiring diagrams and stickers caution sticked inside the outdoor indoor units 9 1 CON...

Page 11: ...9 11 REFRIGERATION CYCLE 53VMC SERIES HEAT PUMP SYSTEM...

Page 12: ...10 REFRIGERATION CYCLE 53VMC SERIES Cont COOL ONLY SYSTEM...

Page 13: ...g OFF the air conditioner 4 The average battery life during normal use is approximately one year 5 When the symbol appears in the display of the remote control this indicates that the batteries are ex...

Page 14: ...e is active and the unit is immediately restarted after a stop this LED flashes until a new signal is sent to the indoor unit RED LED 3 gives the following information During normal operation the LED...

Page 15: ...articularly effective in eliminating odor 2 Optional Photo catalytic air filter effectively eliminates cigarette smoke in the room air 14 3 Installation steps of optional set of air filters Step 1 Aft...

Page 16: ...EANING OF STANDARD AIR FILTERS First clean the filter with a vacuum cleaner every month And Rinse filter under running water and dry it CLEANING OF CARBON FILTER OPTIONAL FILTER First clean the filter...

Page 17: ...tact with sources of heat as hot air can damage the unit casing Clean the infrared control using a damp cloth 17 CONSIDERATIONS BEFORE A LONG SHUTDOWN PERIOD OF AIR CONDITIONER Keep the indoor unit in...

Page 18: ...s etc Indoor Unit Every Month Every Year Clean air filter 1 Clean drain pipe 2 Change controller batteries Outdoor Unit Every Month Every Year Clean outdoor coil from outside 2 Clean outdoor coil from...

Page 19: ...ive defrost both the compressor drive and reversing valve malfunction test will be cancelled and reinitiated after the following compressor OFF ON cycle The Unit on lamp is scanned every half second a...

Page 20: ...nd the indoor unit Repeat the operation after having removed the obstacles Receiver on the indoor unit or the remote control is under intense sun radiation Avoid direct sun on the unit shut curtains o...

Page 21: ...g to be notified to service center Restart air conditioner after having corrected the faults A slight mist is emitted from the indoor unit during cooling The cool air from the indoor unit is coming in...

Page 22: ...03502567 Revision 0 2009 Specifications are subject to change without notice according to Carrier Policy of continuous development SERVICE MAINTENANCE MANUAL...

Page 23: ...ectrical Connections Matching 7 10 Refrigeration Cycle 53QG Series 8 11 Replacing Batteries of Remote Control 10 12 Emergency Operation of Air Conditioner 11 13 Standard and Optional Air Filters 12 14...

Page 24: ...ailure due to Misuse Abusing overloading negligence of air filters cleaning and negligence of operation manual instructions 3 Failure due to Accident Weather Natural catastrophe accident due to bad we...

Page 25: ...ver 2 Operating status leds 6 Supply air outlet 3 Supply air flap 7 Characteristics nameplate 4 Air return grille 8 Inter connecting tubing 5 Air filter behind return grille 9 Condensate drain line In...

Page 26: ...Unit Outdoor Unit Compressor Model P N Model P N Type Supplier 42VMC30 C 46303298 38VMC30 C 46303122 Recip Copeland COOL ONLY 42VMC36 C 46303299 38VMC36 C 46303123 Recip Copeland SPLIT SYSTEM FOR HIG...

Page 27: ...its Optional set of air filters Carbon air filter Photo catalytic air filter P N 36302007 for 42VMC30 36 Set of 2 To eliminate odor and cigarette smoke in the room air respectively PTC starting device...

Page 28: ...tdoor unit in very low ambient temperature After completion of defrosts cycle the system will normally operate 7 SYSTEM SAFETY PROTECTION 7 1 FOR HEAT PUMP SYSTEM PROTECTION TYPE PROTECTION EFFECT OPE...

Page 29: ...6 8 WIRING DIAGRAMS...

Page 30: ...7 WIRING DIAGRAMS Cont...

Page 31: ...power supply to the outdoor unit and then get the power required for the indoor unit from the outdoor unit Refer to wiring diagrams and stickers caution sticked inside the outdoor indoor units 9 1 CON...

Page 32: ...9 10 REFRIGERATION CYCLE 53VMC SERIES HEAT PUMP SYSTEM...

Page 33: ...10 REFRIGERATION CYCLE 53VMC SERIES Cont COOL ONLY SYSTEM...

Page 34: ...the air conditioner does not operate normally after replacing the batteries remove the batteries refit them and press button O again after 5 seconds 6 When the symbol appears in the display of the rem...

Page 35: ...it is immediately restarted after a stop this LED flashes until a new signal is sent to the indoor unit RED LED 3 gives the following information During normal operation the LED is OFF During defrost...

Page 36: ...articularly effective in eliminating odor 2 Optional Photo catalytic air filter effectively eliminates cigarette smoke in the room air 14 3 Installation steps of optional set of air filters Step 1 Aft...

Page 37: ...CLEANING OF STANDARD AIR FILTERS First clean the filter with a vacuum cleaner every month And Rinse filter under running water and dry it CLEANING OF CARBON FILTER OPTIONAL FILTER First clean the fil...

Page 38: ...tact with sources of heat as hot air can damage the unit casing Clean the infrared control using a damp cloth 17 CONSIDERATIONS BEFORE A LONG SHUTDOWN PERIOD OF AIR CONDITIONER Keep the indoor unit in...

Page 39: ...s etc Indoor Unit Every Month Every Year Clean air filter 1 Clean drain pipe 2 Change controller batteries Outdoor Unit Every Month Every Year Clean outdoor coil from outside 2 Clean outdoor coil from...

Page 40: ...oth the compressor drive and reversing valve malfunction test will be cancelled and reinitiated after the following compressor OFF ON cycle The Unit on lamp is scanned every half second and the error...

Page 41: ...than normally satisfying thermostat Capillary or Accurate restricted or ice clogged Blow refrigerant evacuate system and recharge System undersized for load Decrease load or increase system size Temp...

Page 42: ...control batteries are exhausted Replace batteries Remote control has not been pointed correctly to the receiver of indoor unit Turn remote control OFF and repeat the operation in the correct directio...

Page 43: ...ing Clean air filters Doors and or windows are open Close doors and windows Fan speed has been set to Low Set fan speed at high speed Air flow direction is not correct Adjust airflow direction as per...

Page 44: ...nating from the outdoor unit It is normal in heat pump operation when defrost is automatically activated Normal operation Unpleasant smells coming from the indoor unit Unpleasant smells can be caused...

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