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ESIE17-19C
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Part 2. Troubleshooting
2.2. Error based troubleshooting
19/08/19
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Version 1.1
Page 37
Optimized Heating 4
More info:
2.2.2.20. “L3-00” – Switch box temperature abnormality
More info:
Faulty outdoor fan motor.
Check the fan motor.
Check fan motor connections and wiring.
Replace fan motor when required.
Adjust wiring 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.
External factory (e.g. electrical noise).
(cause when error is reset after power
reset, and error happens again after a
while).
Check for source which could cause elec-
trical interference.
Avoid electrical interference.
Check procedures
Replacing procedures
"Replacing main PCB" on page 95
"Replacing compressor" on page 84
"Electronic expansion valve" on page 53
"Replacing expansion valve body" on page 89
"Replacing DC fan motor assembly" on page 87
Trigger
Effect
Reset
Switch box temperature is too high when
the compressor is off.
Unit will not stop operating.
Automatic reset when temperature drops.
Unit will stop operating.
Manual reset via remote controller.
Possible cause
Check
Corrective action
Faulty outdoor inverter PCB.
Check outdoor inverter PCB.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Restore the power to the outdoor inverter
PCB.
Replace the outdoor inverter PCB when
required.
Faulty radiation fin thermistor.
Faulty outdoor fan motor.
Check the fan motor.
Check fan motor connections and wiring.
Replace fan motor when required.
Adjust wiring when required.
Faulty or disturbance of the power supply
(imbalance > 10%). Power drop. Short cir-
cuit.
Check if the power supply is conform with
regulations. No fluctuations in frequency.
Adjust power supply when required.
Power reset via outdoor unit.
Outdoor heat exchanger is dirty.
Check outdoor heat exchanger.
Clean outdoor heat exchanger when
required.
Check procedures
Replacing procedures
"Replacing DC fan motor assembly" on page 87
"Product specific information" on page 118
Possible cause
Check
Corrective action