3
6. Error code
Use
1
78
F c
F 3 1
E01
E02
E 0 3
E 0 4
E05
E0 6
E07
E0
8
Unit working statue
Unit work ing st atue
Failure
Code
Type
System condensing pressure
too high
Comprssor stops
If system too high pressure protection detected by
condensing pressure sensor happened 3 times in a
certain period of time, it gives this failure code and unit
can't be restarted until repowered. Check whether water
flow rate is not enough (more likely it is not enough
water flow rate that caused system build up too high
pressure); whether fan motor and water pump is
working OK; whether condensor is blocked; whether
EEV works normally; whether water temperature too
high, and whether water inlet&outlet temperature has
too big difference (should no bigger than 8
℃
)
Preserved
Preserved
Preserved
Failure
System
failure
Communication between
opeartion panel and indoor
PCB or outdoor PCB failure
Comprssor stops
Comprssor stops
Comprssor stops
Comprssor stops
Comprssor stops
Comprssor stops
Comprssor stops
Comprssor stops
Communication failure between operation panel and the
indoor or outdoor PCB. Check the cable connection in
between. Check whether the last three switches on
outdoor power PCB are set to 001; whether last three
switches on indoor PCB are set to 001. Unit recovers
when communication recovers.
Outdoor power PCB and driver
PCB communication failure
Check the communication cable between outdoor power
PCB and deiver PCB. Check whether outdoor power
PCB and deiver PCB is broken.
Compressor phase current
failure (open/short circuit)
Check whether the power cable to compressor is broken
or short-circuit.
Check whether the power cable to compressor is broken
or short-circuit.
Compressor phase current
overload (over current)
Compressor driver failure
Check whether compressor drive PCB is broken, or
cable to compressor is wrong connected.
Module VDC over high/low
voltage failure
Input voltage too high or too low.
AC current failure
Check the current to outdoor unit, and compare it with
the unit current shown on the operation panel. If the
difference is not big, check whether thesystem has
enough refrigerant (more likely it is not enough
refrigerant that caused this abnormal low current). If the
difference is big, outdoor power PCB is broken. Please
replace it with a new one;
EEPROM failure
Cut the unit power and short-circuit JP404 port on
outdoor power PCB, repower the unit, cut power again
and cancel the short-circuit on JP404 port. If still not
OK, replace the outdoor power PCB.
E 0 1
Unit working statue
Unit work ing st atue
Failure
Code
Type
Ambient temp. sensor failure
1.
Cooling operation is
limited. 2.Cooling and
heating auto-switch is
not available. 3.Unit will
use compressor
discharge temperature as
reference for anti-freezing
protection. 4. Bivalient
function is not available.
Check whether ambient temperature sensor is open,
short-circuit or value drifts too much. Replace it if
necessary.
Failure
【
】
Failure for outdoor unit
【
】
Failure for indoor unit