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Troubleshooting
Service manual
86
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
Trigger
Effect
Reset
Compressor (M1C)
discharge thermistor and
compressor (M2C)
discharge thermistor are
cross-wired.
Unit keeps running.
Auto reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check the wiring of the discharge pipe thermistors on the main PCB. See
Possible cause:
Discharge pipe thermistors are cross–wired.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.65 J5-01-03-05 – Compressor suction thermistor R12T malfunction
Main error code
Sub error code
Unit
J5
01
Main
03
Sub 1
05
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
Thermistor read-out is out
of range
Unit will stop operating.
Auto-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
suction
pipe
thermistor.
See
Possible cause:
Faulty suction pipe thermistor or connector fault.
2
Perform a check of the main PCB. See
Possible cause:
Faulty main PCB.
Summary of Contents for VRV IV+
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