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Troubleshooting
Service manual
108
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
Trigger
Effect
Reset
Fan inverter PCB A4P fails
reading/writing memory
(EEPROM error).
Unit will stop operating.
Manual reset via user
interface.
Power reset at outdoor
unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Perform a check of the fan inverter PCB A4P. See
259].
Possible cause:
Faulty fan inverter PCB A4P.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.93 L1-29-33-35 – Fan inverter PCB A7P Eeprom error
Main error code
Sub error code
Unit
L1
29
Main
33
Sub 1
35
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
Fan inverter PCB A7P fails
reading/writing memory
(EEPROM error).
Unit will stop operating.
Manual reset via user
interface.
Power reset at outdoor
unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Perform a check of the fan inverter PCB A7P. See
259].
Possible cause:
Faulty fan inverter PCB A7P.
Summary of Contents for VRV IV+
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