E4-00 - Abnormal Suction Pressure - Daikin Sky Air Advance RZA200D7Y1B Service Manual

2.4.4 E4-00 – Abnormal suction pressure
RZA200+250D7Y1B
Sky Air Advance-series
ESIE19-13A – 2020.05
Possible cause: Faulty outdoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Refrigerant suction
pressure is too low for
5 minutes.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check
"3.15 Thermistors" [
Possible cause: Faulty suction pipe thermistor or connector fault.
2 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.
3 Check if the refrigerant circuit is correctly charged. See
4
circuit" [ 137].
Possible cause: Refrigerant shortage.
4 Check for the presence of humidity in the refrigerant circuit. See
"4.2 Refrigerant circuit" [
Possible cause: Humidity in the refrigerant circuit.
5 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
6 Perform a check of all expansion valves. See
Possible cause: Faulty expansion valve.
7 Check the required space around the outdoor unit heat exchanger. See
"4.3 External factors" [
Possible cause: Insufficient air flow or air by‑pass due to required space
specifications not met.
8 Clean the outdoor heat exchanger. See "5 Maintenance" [
Possible cause: Dirty outdoor heat exchanger.
9 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.
Effect
Unit will stop operating.
of the suction
4
128].
4
137].
4
137].
4
147].
"3.9 Main
2 Troubleshooting
|
Reset
Manual reset via user
interface.
pipe thermistor.
"4.2 Refrigerant
"4.2 Refrigerant circuit" [
4
"3.4 Expansion valve" [
4
149].
4
PCB" [ 95].
See
4
137].
68].
Service manual
21