Daikin VRV IV+ Service Manual page 29

2.3.9 E3-13-14-15 – Liquid stop valve check error
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
Main error code
E3
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
Pressure builds up quickly
on test run operation.
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 Perform a check of the refrigerant high pressure sensor. See
high pressure sensor" [
Possible cause: Faulty refrigerant high pressure sensor.
3 Check if the refrigerant circuit is correctly charged. See
4
circuit" [ 363].
Possible cause: Refrigerant overcharge.
4 Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See
Possible cause: Non‑condensables and/or humidity in the refrigerant circuit.
5 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
6 Perform a check of the condenser side expansion valve. See
4
valve" [ 244].
Possible cause: Faulty condenser side expansion valve.
7 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Sub error code
13
14
15
Effect
Unit will stop test run.
4
363].
4
330].
"4.2 Refrigerant circuit" [
"3.11 Main
2 Troubleshooting
|
Unit
Main
Sub 1
Sub 2
Reset
Eliminate the cause,
repeat test operation
procedure.
"3.17 Refrigerant
"4.2 Refrigerant
4
363].
"4.2 Refrigerant circuit" [
"3.7 Expansion
4
PCB" [ 290].
4
363].
Service manual
29