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Troubleshooting
Service manual
84
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
INFORMATION
Main, Sub 1 and Sub 2 indications are relevant in multiple outdoor unit
configurations. Main outdoor unit is the unit to which F1‑F2 IN transmission line is
connected. Main, Sub 1 and Sub 2 outdoor units can be identified by field setting
1‑00.
Trigger
Effect
Reset
Compressor (M1C) body
temperature thermistor
R15T short circuit or out
of range.
Unit will stop operating.
Manual reset via user
interface.
Automatic reset when
thermistor read-out is
within range.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Perform
a
check
of
the
compressor
body
thermistor.
See
Possible cause:
Faulty compressor body thermistor or connector fault.
2
Perform a check of the main PCB. See
Possible cause:
Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.63 J3-56-57-58 – High discharge temperature
Main error code
Sub error code
Unit
J3
56
Main
57
Sub 1
58
Sub 2
INFORMATION
Main, Sub 1 and Sub 2 indications are relevant in multiple outdoor unit
configurations. Main outdoor unit is the unit to which F1‑F2 IN transmission line is
connected. Main, Sub 1 and Sub 2 outdoor units can be identified by field setting
1‑00.
Trigger
Effect
Reset
Compressor discharge
temperature (R21T and/
or R22T) too high.
Unit keeps running.
Auto reset.
Summary of Contents for VRV IV+
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