ESIE16-03B
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Part 2. Troubleshooting
2.2. Error based troubleshooting
22/08/16
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Version 1.1
Page 29
SA R32 Sky-Air RZAG-L
2.2.2.3. “E4-00” – Suction pressure abnormality
2.2.2.4. “E5-00” – Compressor motor lock or overheated
Non condensables in refrigerant.
Check for non condensables in refriger-
ant.
In case of suspicion of non condensables,
recover, vacuum and recharge with virgin
refrigerant.
Refrigerant is contaminated.
Check for non condensables in refriger-
ant.
In case of suspicion of non condensables.
Recover, vacuum and recharge refriger-
ant.
Stop valve is closed.
Check if stop valve is open.
Open stop valve when required.
Faulty outdoor fan motor.
Check the fan motor (see
"Fan motor" on
page 52
).
Check fan motor connections and wiring.
Replace fan motor when required (see
"Replacing DC fan motor assembly" on
page 79
).
Adjust wiring when required.
Trigger
Effect
Reset
When refrigerant pressure is below
1,2 bar for 5 minutes.
Unit will stop operating.
Manual reset via user interface.
Possible cause
Check
Corrective action
Faulty outdoor unit main PCB.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives
power.
Adjust the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals
(see
"Replacing main PCB" on page 89
).
Bad contact through pressure sensor
cable.
Check if pressure sensor connector is
properly connected to the outdoor PCB
board.
Connect or replace sensor cable when
required.
Faulty capacity adapter on outdoor PCB.
Check if the correct adapter is installed.
Check if the correct spare part is installed.
Adjust capacity adapter when required.
Stop valve is closed.
Check if stop valve is open.
Open stop valve when required.
Abnormal drop of low pressure, caused by
inadequate refrigerant, abnormal refriger-
ant piping system or faulty electronic
expansion valve.
Check for possible blockage. (Blockages
can be checked by measuring the refriger-
ant/pipe temperature. Sudden drop in
temperature could indicate a blockage
(remark: this is not valid for the expansion
valve.))
Replace the blocked part.
Trigger
Effect
Reset
Compressor overload is detected.
Unit will stop operating.
Automatic reset if the unit runs for 60 sec-
onds without error.
Possible cause
Check
Corrective action
Faulty discharge pipe thermistor.
Check discharge pipe thermistor (see
"Refrigerant thermistors" on page 57
).
Replace discharge pipe thermistor when
required.
Faulty outdoor fan motor.
Check the fan motor (see
"Fan motor" on
page 52
).
Check fan motor connections and wiring.
Replace fan motor when required (see
"Replacing DC fan motor assembly" on
page 79
).
Adjust wiring when required.
Faulty overload protection.
Check the overload protection.
Check the overload protection connec-
tions and wiring.
Replace the overload protection when
required.
Adjust wiring when required.
Possible cause
Check
Corrective action
