Daikin VRV IV+ Service Manual page 39

2.3.18 E7-02-14-26 – Outdoor unit fan motor M2F error
2.3.19 E7-05-17-29 – Outdoor unit fan motor M1F overcurrent error
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
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 M2F.
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 A7P. See
4
PCB" [ 259].
Possible cause: Faulty fan inverter PCB A7P.
2 Check if power supply cable to fan motor is NOT loose. Check connector X2A
on fan inverter PCB A7P. See "To check the wiring of the fan inverter PCB"
"3.8 Fan inverter PCB" [
Possible cause: Faulty power supply cable to fan motor M2F.
3 Perform a check of the outdoor unit fan motor M2F. See
4
fan motor" [ 307].
Possible cause: Faulty outdoor unit fan motor M2F.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Main error code
E7
Sub error code
02
14
26
Effect
Unit will stop operating.
4
259]. Check wire to fan motor M2F.
Sub error code
05
17
29
2 Troubleshooting
|
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
"3.8 Fan inverter
"3.14 Outdoor unit
Unit
Main
Sub 1
Sub 2
Service manual
39