Daikin VRV IV+ Service Manual page 188

2 | Troubleshooting
2.3.203 NG – Refrigerant leak check function detects refrigerant leak
2.3.204 OK – Refrigerant leak check function detects no refrigerant leak
2.3.205 Indoor unit related error codes
Service manual
188
Trigger
Result of refrigerant leak
check function deviates
more than 15% compared
to result of test run.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check for leaks in the refrigerant circuit. Look for oil traces on the unit(s).
Check the brazing points on the field piping. Perform a leak test, see
"4.2 Refrigerant circuit" [
Possible cause: Leak in the refrigerant circuit.
2 Indoor and/or outdoor temperature(s) of test run and latest leak check
function should NOT differ too much. Consult the logbook and compare
temperatures to auto‑charge time. Perform a new leak test when the indoor
and outdoor temperatures do NOT deviate too much compared to the time of
test run.
Possible cause: Indoor and/or outdoor temperature(s) of test run and latest
leak check function is drastically different from each other.
3 Check if indoor unit layout has changed since latest test run. If this is the case,
a new test run needs to be performed.
Possible cause: Indoor unit layout has changed since latest test run.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Result of refrigerant leak
check function is within
15% range, compared to
result of test run.
To solve the error code
1 No corrective action needed.
Error code Description
A0-00 Main PCB error
A1-00 EEPROM error on main PCB
A3-00 Float switch open during thermo ON in cooling mode
Effect
Result of last 3 refrigerant
leak check function is
stored on Mode 1 items
29‑30‑31, see "6.9 Field
4
settings" [ 455].
4
363].
Effect
Unit will operate
normally.
Reset
No reset required.
Reset
No reset required.
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05