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Troubleshooting
Service manual
90
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.70 J7-01-02-03 – Main liquid pipe thermistor R3T malfunction
Main error code
Sub error code
Unit
J7
01
Main
02
Sub 1
03
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
Main liquid pipe
thermistor R3T short/
open 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
main
liquid
pipe
thermistor.
See
Possible cause:
Faulty main liquid pipe thermistor.
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.
2.3.71 J7-06-07-08 – Liquid thermistor R7T abnormality
Main error code
Sub error code
Unit
J7
06
Main
07
Sub 1
08
Sub 2
Summary of Contents for VRV IV+
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