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Digital tube
Indication
indication
on wired
on master
controller
unit
(hex)
Communication with
46
2E
inverter board failure
CT current is too low
53
35
or current sensor
fault
Control board for
54
36
subcooling valve
communication fault
Communication
failure between
control board for
57
39
subcooling valve
and PCB(sending
by control board for
subcooling valve)
Tc1 temp sensor
of control board for
subcooling valve
58
3A
failure (sending by
control board for
subcooling valve)
Tc2 temp sensor of
Control board for
subcooling valve
59
3B
failure (sending by
control board for
subcooling valve)
Control board for
subcooling valve
60
3C
failure (sending by
valve plate)
Control board for
subcooling valve
61
3D
failure (sending by
control board for
subcooling valve)
Control board for
subcooling valve
62
3E
failure (sending by
control board for
subcooling valve)
Control board for
63
3F
subcooling valve dip
switch setting wrong
CT current is too
64
40
high
Failure code
Failure description
definition
No communication for 30 seconds continuously, when
communication is normal, resume
Compressor frequency continuous operation after 1 minute,
compressor frequency ≥70Hz, current sensor for five minutes
samples values less than 10, alarm. 3 minutes later recovery. If
it occurs 3 times in an hour, confirm the failure.
Cannot receive the signal of control board for subcooling
valve in 200 continuous cycles or receive wrong data, recover
automatically when received right data.
Communication failure between control board for subcooling
valve and PCB
Tc1 temp. sensor cannot connect with control board for
subcooling valve
Tc2 temp. sensor cannot connect with control board for
subcooling valve
Reserved
Reserved
Reserved
The dip switch setting there is no control board for subcooling
valve, but the control board for subcooling valve is detected.
(please check the dip switch setting of BM2-2, BM2-3, BM2-4,
BM2-5)
CT current exceeds specified value for continuous 5s, 3
minutes after recovery, If it occurs 3 times in an hour, confirm
the failure
43
Remarks
Resumable
Once
confirmation, un-
resumable
Resumable
Resumable
Resumable
Resumable
Resumable
Resumable
Resumable
Un-resumable
Once
confirmation, un-
resumable
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