Daikin VRV IV+ Service Manual page 90

2 | Troubleshooting
2.3.70 J7-01-02-03 – Main liquid pipe thermistor R3T malfunction
2.3.71 J7-06-07-08 – Liquid thermistor R7T abnormality
Service manual
90
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Main error code
J7
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
Main liquid pipe
thermistor R3T short/
open circuit or out of
range.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check
"3.21 Thermistors" [
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.
Main error code
J7
Sub error code
01
02
03
Effect
Unit will stop operating.
of the main
4
348].
"3.11 Main
Sub error code
06
07
08
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
Automatic reset when
thermistor read-out is
within range.
liquid pipe thermistor.
4
PCB" [ 290].
Unit
Main
Sub 1
Sub 2
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
See