Service diagnosis
Domestic air conditioner
11.3 Problem Symptoms and Measures
Symptom
Check Item
Details of Measure
None of the units
operates
Check the power supply.
Check to make sure that the rated voltage is supplied.
Check the indoor PCB
Check to make sure that the indoor PCB is broken
Operation
sometimes stops.
Check the power supply.
A power failure of 2 to 10 cycles can stop air conditioner
operation.
Equipment
operates but
does not cool, or
does not heat
(only for heat
pump)
Check for faulty operation
of the electronic
expansion valve.
Set the units to cooling operation, and compare the
temperatures of the liquid side connection pipes of the
connection section among rooms to check the opening and
closing operation of the electronic expansion valves of the
individual units.
Diagnosis by service port
pressure and operating
current.
Check for insufficient gas.
Large operating
noise and
vibrations
Check the installation
condition.
Check to make sure that the required spaces for
installation (specified in the Technical Guide, etc.) are
provided.
Содержание 2U14CS4ERA
Страница 10: ... Pinping diagrams Domestic air conditioner 4ˊPinping diagrams 8 ...
Страница 11: ... Operation range Domestic air conditioner 5ˊOperation range 9 ...
Страница 15: ...PCB 2 CN1 CN5 CN6 CN7 CN10 CN11 CN8 CN9 CN2 CN3 CN4 Domestic air conditioner Wiring diagram ...
Страница 16: ...0 Wiring diagram Domestic air conditioner ...
Страница 35: ...WARNING CAUTION Installations Domestic air conditioner 33 ...
Страница 36: ...Installations Domestic air conditioner 34 ...
Страница 37: ...Installations Domestic air conditioner 35 ...
Страница 38: ...Installations Domestic air conditioner 36 ...
Страница 39: ...Installations Domestic air conditioner 37 ...
Страница 40: ...Installations Domestic air conditioner 38 ...
Страница 41: ...Installations Domestic air conditioner 39 ...
Страница 85: ...1 Removal Procedure 1 Domestic Air Conditioner p ...
Страница 86: ...Loosen the top panel screws 1 2 Lift the top panel Removal Procedure 2 Domestic Air Conditioner ...
Страница 87: ...Loosen the screws and pull the panel Removal Procedure 3 Domestic Air Conditioner ...
Страница 89: ...Removal Procedure 5 Domestic Air Conditioner 2 ...
Страница 90: ...Removal Procedure 6 Domestic Air Conditioner 3 ...
Страница 91: ...2 Loosen the fixing screws and remove the motor Removal Procedure 7 Domestic Air Conditioner ...
Страница 92: ...Removal Procedure 8 Domestic Air Conditioner 4 F M P B ...
Страница 93: ...and remove the reactor Loosen the screw Removal Procedure 9 Domestic Air Conditioner ...
Страница 94: ...Loosen the marked screws and pull out the backgurd Removal Procedure 10 Domestic Air Conditioner 5 C H E 1 ...
Страница 96: ...4 Remove the compre ssor and pipe assay 5 Remove the conden ser Removal Procedure 12 Domestic Air Conditioner ...