U-MATCH AIR CONDITIONERS MAINTENANCE
89
MAINTENANCE
1 TROUBLE TABLE
Trouble
Code
Trouble Name
Origin of
Trouble Signal
Control Description
E0 Pump
Failure
Pump
If water full protection continues for 2 hours and fails to restore,
it is believed that the water pump is at fault and all loads are shut
off and fail to restore automatically.
E1
Compressor High
Pressure Protection
High voltage switch
When high voltage protection is detected for continuous 3
seconds, all loads are shut off (except for the four way valve), all
buttons and remote control signals except for power-on or
power-off are shielded and fail to restore automatically, the unit
should be powered off and on, or failure should be removed after
power supply is restored.
E2
Indoor Frost-Proof
Protection
Evaporator of indoor
unit
Thermal bulb
When the unit has been running for refrigeration or
dehumidification for a period of time and evaporator thermal
bulb is detected to be lower than -2
ć
, the unit will report a fault
and stops the compressor and the outdoor unit. The unit will
begin to operate after temperature is
ı
10
ć
and the compressor
keeps outage for 3 minutes.
E3
Compressor Low
Pressure Protection
Low voltage switch
When the unit is started or at standby (detection will begin 3
minutes after the compressor is started up) and detected
breakdown of the low voltage switch for continuous 30 seconds,
a fault is reported. The unit can be restored automatically after
the first 2 reported faults within 30 minutes. The third reported
fault and so on can not be restored automatically.
E4
Compressor Exhaust High
Temperature Protection
Discharge thermal
bulb
After the compressor is started, if discharge temperature is
detected to be more than or equal to 130 degree for continuous
30 seconds, E4 will be displayed, all loads (except for the four
way valve) will be shut off, the compressor will stop for 3
minutes and the complete system will restore after discharge
temperature is lower than 90 degree. If such fault is reported for
successive three times, the protection can not be restored itself.
E5
Compressor
Overheat
Compressor
After the compressor is started, if the overload switch of the
compressor is detected to shut off, the fault is reported. All loads
(except for the four way valve) are shut off, the fault is displayed,
and the compressor will stop for 3 minutes. If the fault is
removed, the compressor can be restarted to run. If successive
three compressor overload protection faults are detected within
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Страница 97: ...U MATCH AIR CONDITIONERS MAINTENANCE 94 Malfunction display E1 Compressor High Pressure Protection...
Страница 98: ...U MATCH AIR CONDITIONERS MAINTENANCE 95 Malfunction display E3 Compressor Low Pressure Protection...
Страница 101: ...U MATCH AIR CONDITIONERS MAINTENANCE 98 Malfunction display E6 Communications Failure...
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