Sinclair ASGE-09A Service Manual page 96

U-MATCH AIR CONDITIONERS
Trouble
Trouble Name
Code
Failure of Evaporator
F1
Temp. Sensor
Failure of Condenser
F2
Temp. Sensor
Failure of Outdoor
F3
Ambient Sensor
Failure of Exhaust
F4
Temp. Sensor
Origin of
Trouble Signal
fault is displayed and the indoor fan is running normally. The
fault display disappears when the fault is removed.
Open-circuit or short-circuit of evaporator thermal bulb is
detected for continuous 5 seconds, under refrigeration and
dehumidification mode, the system will be shut off; and under
heating mode, all loads except for the four way valve are shut
Indoor evaporator
off. The indicator is twinkling or fault code F1 is displayed. The
thermal bulb
system can restore by itself and display fault elimination after the
fault is removed. Under air supply mode, only the fault is
displayed and the indoor unit is running normally. The fault
display disappears when the fault is removed.
Open-circuit or short-circuit of condenser thermal bulb is
detected for continuous 5 seconds, under refrigeration and
dehumidification mode, the system will be shut off; and under
heating mode, all loads except for the four way valve are shut
off. The indicator is twinkling or fault code F2 is displayed. The
Outdoor condenser
system can restore by itself and display fault elimination after the
thermal bulb
fault is removed. Under air supply mode, only the fault is
displayed and the indoor unit is running normally. The fault
display disappears when the fault is removed.
For other types of refrigeration machines except for air duct
machine, condenser thermal bulb is not detected.
Open-circuit or short-circuit of outdoor environment thermal
bulb is detected for continuous 5 seconds, under refrigeration and
dehumidification mode, the system will be shut off; and under
heating mode, all loads except for the four way valve are shut
Outdoor environment
off. The indicator is twinkling or fault code F3 is displayed. The
thermal bulb
system can restore by itself and display fault elimination after the
fault is removed. Under air supply mode, only the fault is
displayed and the indoor unit is running normally. The fault
display disappears when the fault is removed.
After the compressor is started, open-circuit of discharge thermal
bulb is detected for continuous 5 seconds. Under refrigeration
and dehumidification mode, all loads will be shut off. Under
Discharge thermal
heating mode, all loads except for the four way valve are shut
bulb
off. The indicator is twinkling or fault code F4 is displayed. And
the buzzer gives out an alarm. After the fault is removed, the
system will restore by itself and clear the fault code.
MAINTENANCE
Control Description
94