Haier MRV SII AU042FNEUA Service Manual page 50

Digital tube
indication on Failure code definition
master unit
CT current is too low or
53
current sensor fault
Valve plate module
54
communication fault
55 Valve plate module LEV fault
Valve plate module temp.too
56
high
Communication failure
between valve plate module
57
and host computer(sending by
valve plate)
Tc1 temp sensor of valve plate
58
error(sending by valve plate)
Tc2 temp sensor of valve plate
59
error(sending by valve plate)
Valve plate module
60
error(sending by valve plate)
Valve plate module
61
error(sending by valve plate)
Valve plate module
62
error(sending by valve plate)
63 Valve plate dial setting error
64 CT current is too high
71-0 Upper DC motor blocked
71-1 Lower DC motor blocked
IPM modular temp. too high
81
protection
82 Compressor current protection
83 Outdoor model set error
Failure description
3 minutes after recovery
Cannot receive valve plate module signal in 200
continuous rounds or receive wrong data,recover
automatically when received right data.
During cooling operation, when Tc2 ≤ Tao-10 ° C and
Tc2 ≤ average Tc2 temperature of the internal unit +
0 ° C for 1 minute, an alarm will be issued. When Tc2
≥ Tao-5 ° C and TC2 ≥ average Tc2 temperature of
the internal unit + 5 ° C for 1 minute When the fault is
resolved.
When Tc1 ≥ 85°C is detected for 5 seconds, the
thermal storage module overheating protection is
reported.
Tc1 ≤ 80°C for 5 seconds to recover. 3 times lockouts
per hour.
Communication failure between valve plate module
and host computer
Tc1 temp. sensor cannot connect with valve plate
module
Tc2 temp. sensor cannot connect with valve plate
module
Reserved
Reserved
Reserved
No valve plate module dial but the valve plate module
is detected.
CT current exceeds specified value, 3 minutes after
recovery
Running at speed below 20rpm for 30s, or at speed of
70% lower than the target for 2 minutes, 2 minutes and
50 seconds later after stop, resume automatically. It
occurs 3 times in an hour, confirm the failure.
IPM modular temp.≥185°F(85°C)
Compressor current exceeds specified value, 3
minutes after recovery
Model and the number of fans do not match
48
Remarks
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Resumable
Resumable
Once
confirmation,
un-resumable
Resumable
Resumable
Resumable
Resumable
Resumable
Resumable
Once
confirmation,
un-resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Once
confirmation,
un-resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Un-resumable