E4-00 - Abnormal Suction Pressure - Daikin altherma 3 M Service Manual

2.3.28 E4-00 – Abnormal suction pressure
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
5 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.
6 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
7 Perform a check of the outdoor unit fan motor. See
4
motor" [ 217].
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
Suction pressure was too
low (detected by
thermistor/pressure
sensor or low pressure
switch) for several times.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check
"3.20 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" [ 286].
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
"4.5 External factors" [
Possible cause: Insufficient air flow or air by‑pass due to required space
specifications not met.
"4.2 Refrigerant circuit" [
Effect
Unit will stop operating.
of the suction
4
248].
4
286].
4
286].
4
307].
2 Troubleshooting
|
4
286].
"4.2 Refrigerant circuit" [
"3.16 Outdoor unit fan
Reset
Manual reset via user
interface.
pipe thermistor.
"4.2 Refrigerant
"4.2 Refrigerant circuit" [
4
"3.9 Expansion valve" [
4
286].
See
4
286].
149].
Service manual
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