Haier MVHP036MV2AA Installation Manual page 23

Failure code
Digital tube Indication
indication on wired
on master controller
unit (hex)
39-1 39-1
39-2 39-2
40 40
43 43
46 46
53 53
54 54
57 57
58 58
59 59
60 60
61 61
Failure code
Failure description
definition
After compressor is running, compression ratio 8. for
Compression ratio continuous 5 minutes stop and alarm.2 minutes and 50
too high protection seconds later, resume automatically, if it occurs 3 times in
an hour, confirm the failure.
In normal operation, compression ratio <1.8 for continuous
Compression ratio 5 minutes stop and alarm.2 minutes and 1 seconds later,
too low protection resume automatically, if it occurs 3 times in an hour, confirm
the failure.
In normal operation, Pd>=4.15Mpa for continuous 50ms,
High pressure
alarm and stop. 2 minutes and 50 seconds later, resume
sensor Pd too high
automatically, if it occurs 3 times in an hour, confirm the
protection
failure.
In normal operation, if Td<CT+50°F
(10°C) for continuous 5 minutes, the unit stops and alarms.2
Discharging temp. minutes and 50 seconds later, resume automatically. If it
sensor Td too low occurs 3 times in an hour, confirm the failure. After fixed
protection frequency compressor alarms, inverter compressor will
continue to run. If fixed frequency compressor has been
locked for 3 times, the unit will stop and alarm.
Communication
with inverter board No communication within 30 seconds continuously
failure
CT current is too
low or current 3 minutes after recovery
sensor fault
Valve plate module Cannot receive valve plate module signal in 200 continuous
communication rounds or receive wrong data,recover automatically when
fault received right data.
Communication
failure between
valve plate Communication failure between valve plate module and
module and host host computer
computer(sending
by valve plate)
Tc1 temp sensor
of valve plate
Tc1 temp. sensor cannot connect with valve plate module
error(sending by
valve plate)
Tc2 temp sensor
of valve plate
Tc2 temp. sensor cannot connect with valve plate module
error(sending by
valve plate)
Valve plate module
error(sending by Reserved
valve plate)
Valve plate module
error(sending by Reserved
valve plate)
21
Remarks
Once
confirmation,
un-resumable
Once
confirmation,
un-resumable
Once
confirmation,
un-resumable
Once
confirmation,
un-resumable
Resumable
3 times in an
hour, confirm
failure; once
confirmation,
un-resumable
Resumable
Resumable
Resumable
Resumable
Resumable
Resumable