H9-00 - Outdoor Unit: Malfunction Of Outdoor Air Thermistor - Daikin Sky Air Advance RZA200D7Y1B Service Manual

2.4.12 H9-00 – Outdoor unit: Malfunction of outdoor air thermistor
RZA200+250D7Y1B
Sky Air Advance-series
ESIE19-13A – 2020.05
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 correctly charged. See
4
circuit" [ 137].
Possible cause: Refrigerant shortage.
3 Perform a check of the low pressure switch. See
4
switch" [ 91].
Possible cause: Faulty low pressure switch.
4 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
5 Perform a check of all expansion valves. See
Possible cause: Faulty expansion valve.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Outdoor air thermistor
input is out of range.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the outdoor air thermistor. See "3.15 Thermistors" [
Possible cause: Faulty ambient air thermistor.
2 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.
4 137].
"3.9 Main
"3.4 Expansion
Effect
Unit will stop operating.
"3.9 Main
2 Troubleshooting
|
"4.2 Refrigerant
"3.8 Low pressure
4
PCB" [ 95].
4
valve" [ 68].
Reset
Manual reset via user
interface.
4
4
PCB" [ 95].
Service manual
128].
27