![background image](http://html.mh-extra.com/html/daikin/vrv-iv/vrv-iv_service-manual_502236033.webp)
2
|
Troubleshooting
Service manual
33
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
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.
2.3.13 E5-01-02-03 – Compressor overload/Motor Lock Error (M1C)
Main error code
Sub error code
Unit
E5
01
Main
02
Sub 1
03
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
Compressor overload is
detected for M1C.
Unit will stop operating.
Manual reset via user
interface.
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
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
Possible cause:
Faulty oil return valve Y11S .
4
Perform a check of the oil return valve Y12S. See
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
221].
Possible cause:
Faulty compressor.
Summary of Contents for VRV IV+
Page 473: ......
Page 474: ......
Page 475: ......
Page 476: ...ESIE18 15B 2020 05 Copyright 2020 Daikin Verantwortung für Energie und Umwelt ...