DC INVERTER U-MATCH AIR CONDITION MAINTENANCE
97
MAINTENANCE
1 TROUBLE TABLE
Table 1 Fault Display on Indoor Wired controller:
Trouble
Code
Trouble
Name
Origin of
Trouble Signal
Control Description
E0
Water Pump
Malfunction
Water pump
If the water-full protection cannot be recovered after 2 hours, it is
believed that the water pump is failed, in which case all the loads
will be switched off and cannot be recovered automatically.
E1
High Pressure
Protection of
Compressor
High-pressure
Switch
When high pressure protection is detected for 3 seconds
successively, all the loads (except the heating 4-way valve) will be
switched off, in which case all the keys and remote control signals
except ON/OFF function will be disabled and cannot be recovered
automatically. To eliminate the fault, it is needed to switch off and on
the machine or recover from power failure.
E2
Indoor
Anti-frozen
Protetion
Indoor evaporator
sensor
If detecting that the evaporator sensor is lower than -2 after the ℃
unit has been running for a period of time under cooling or dry
mode, the unit will report this fault, in which case the compressor
and outdoor fan will be stopped. The unit will not run until this
temperature is ≥10 and the compressor is stopped for 3 minutes. ℃
E3
Low Pressure
Protection of
Compressor
Low-pressure
Switch
If it is detected within 30 seconds successively that the low-pressure
switch is cut off under ON or standby state (If the compressor is
started, the detection will start 3 minutes after the compressor has
run), the unit will report this fault. For the first two faults within 30
minutes, the unit can be recovered automatically. If over three times,
the unit cannot be recovered automatically.
E4
Air Discharge
High-temperatur
e Protection of
Compressor
Exhaust
Overtemperature
Protection
After the compressor is started, if it is detected within 30 seconds
successively that the exhaust temperature is 130 or higher, E4 will ℃
be displayed, in which case all the loads (except the 4-way valve o
heating) will be stopped. The complete unit can only be recovered
until the compressor has stopped for 3 minutes and the exhaust
temperature is lower than 90 . For th℃ is protection occurs three
times, the complete unit cannot be recovered automatically.
E5
Overload
Proection of
Compressor
Compressor
After the unit is energized, if it is detected within 3 seconds
successively that the compressor overload switch is cut off, it will be
deemed compressor overload protection. In this case, all the loads
will be stopped (except the 4-way valve of heating) and E5 will be
displayed. If the fault is eliminated, the compressor will be restarted
after 3 minutes. If three compressor overload protections are
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