Daikin VAM350J8VEB, Руководство по обслуживанию

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3 | Troubleshooting
Service manual
22
VAM350~200 EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02
Possible cause: External source may cause interference.
5 Perform a check of the indoor unit main PCB. See Indoor unit PCB.
Possible cause: Faulty indoor unit main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.2.2 A0-11 – R32 leakage detection
EKVDX-A units
Trigger Effect Reset
The R32 sensor indoor
unit detected a
refrigerant leak while fan
of indoor unit is switched
ON. Indoor unit will stop
operating after end of
automatic refrigerant
recovery to the outdoor
unit. ▪ Power reset of the
indoor unit.
▪ Set field setting
25‑14‑01 to 02 on the
remote controller of the
faulty indoor unit.
▪ Outdoor unit shows
error “UA‑55”. Set field
setting 2‑47 to 1 on the
outdoor unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check the field piping for refrigerant leak. Check saturation pressure of the
field piping via the liquid service port and gas stop valve.
2 If saturation pressure (gas and/or liquid) <outdoor ambient temperature,
refrigerant leak is present. Perform as follows to repair the refrigerant leak:
▪
Recover the refrigerant, see To recuperate the refrigerant.
▪ Repair the field piping.
▪ Perform a pressure test of the field piping.
▪ Replace the R32 leak detection sensor of the indoor unit with error code
A0-11. After replacement, indoor unit will display error code CH-10.
▪
Recharge the refrigerant at the outdoor unit. Consult amount sticker. See
installation manual of the outdoor unit for correct refrigerant charge
procedure.
▪ Fill in the logbook.
Possible cause: Refrigerant leak at indoor unit side.
3 If saturation pressure (gas and/or liquid) = outdoor ambient temperature, NO
refrigerant leak is present. Perform as described below.
4 Perform a check of the R32 leak detection sensor of the faulty indoor unit. See
R32 leak detection sensor.
Possible cause: Faulty R32 leak detection sensor.
5 Check if any external (foreign) vapor substance influenced the functioning of
the R32 leak detection sensor. Repair as needed.
draft – 07/02/2022 15:12