Daikin VRV IV+ Service Manual page 33

2.3.13 E5-01-02-03 – Compressor overload/Motor Lock Error (M1C)
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
11 Check the F1‑F2 transmission line between the indoor units and outdoor unit.
See "4.1 Electrical circuit" [
Possible cause: Faulty or interruption in transmission line between indoor
units and outdoor unit.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Main error code
E5
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
Compressor overload is
detected for M1C.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check that all stop valves of the refrigerant circuit are open. See
"4.2 Refrigerant circuit" [
Possible cause: Closed stop valve in the refrigerant circuit.
2 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
3 Perform a check of the oil return valve Y11S. See
4
valve" [ 302].
Possible cause: Faulty oil return valve Y11S .
4 Perform a check of the oil return valve Y12S. See
4
valve" [ 302].
Possible cause: Faulty oil return valveY12S.
5 Check if there are oil traps in the field piping. See installation manual for
piping rules.
Possible cause: Compressor running without oil will draw higher current and
get locked.
6 Perform a check of the compressor. See "3.3 Compressor" [
Possible cause: Faulty compressor.
4
356].
Sub error code
01
02
03
Effect
Unit will stop operating.
4 363].
"4.2 Refrigerant
2 Troubleshooting
|
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
4
circuit" [ 363].
"3.13 Oil return
"3.13 Oil return
4
221].
Service manual
33