Daikin VRV IV+ Service Manual page 38

2 | Troubleshooting
2.3.17 E7-01-13-25 – Outdoor unit fan motor M1F error
Service manual
38
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Main error code
E7
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
Malfunction of rotation
detection for M1F.
Careful, there is no rpm
detection. Fan judgement
is based on logic by
current drawn.
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
4
PCB" [ 259].
Possible cause: Faulty fan inverter PCB A4P.
2 Check if power supply cable to fan motor is NOT loose. Check connector X1A
on fan inverter PCB A4P. See "To check the wiring of the fan inverter PCB"
"3.8 Fan inverter PCB" [
Possible cause: Faulty power supply cable to fan motor M1F.
3 Perform a check of the outdoor unit fan motor M1F. See
4
fan motor" [ 307].
Possible cause: Faulty outdoor unit fan motor M1F.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Sub error code
01
13
25
Effect
Unit will stop operating.
4
259]. Check wire to fan motor M1F.
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
"3.8 Fan inverter
"3.14 Outdoor unit
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05