ESIE17-19C
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Part 2. Troubleshooting
2.2. Error based troubleshooting
Page 40
19/08/19
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Version 1.1
Optimized Heating 4
2.2.2.24. “L9-00” – Stall prevention time lag
More info:
2.2.2.25. “LC-00” – Transmission system abnormality
Trigger
Effect
Reset
Outdoor inverter PCB detects compressor
overload at start up.
Unit will stop operating.
Manual reset via user interface.
Possible cause
Check
Corrective action
Refrigerant circuit is clogged.
Check for possible blockage.
Replace blocked part when required.
Refrigerant condition is not OK (HP-LP >
0,2 MPa at start-up).
Check refrigerant condition.
Faulty outdoor inverter PCB.
Check outdoor inverter PCB.
Check if the alive led is blinking in regular
intervals.
Check if the correct spare part is installed.
Adjust the power to the outdoor inverter
PCB.
Replace outdoor inverter PCB.
Faulty compressor.
Check compressor.
Check connections and wiring of the com-
pressor.
Check expansion valve (liquid back
issue).
Check the refrigerant charge. Refer to the
nameplate for correct charge.
Replace compressor when required.
Investigate reason of breakdown.
Replace expansion valve when required.
Fix possible leak.
Check procedures
Replacing procedures
"Replacing compressor" on page 84
"Electronic expansion valve" on page 53
"Replacing expansion valve body" on page 89
Trigger
Effect
Reset
No transmission between outdoor main
PCB and outdoor inverter PCB.
Unit will stop operating.
Automatic reset.
Possible cause
Check
Corrective action
Internal wiring is not OK.
Check if wiring between PCB’s. (refer to
wiring diagram).
Correct wiring.
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.
Faulty outdoor inverter PCB.
Check outdoor inverter PCB.
Check if the alive led is blinking in regular
intervals.
Check if the correct spare part is installed.
Adjust the power to the outdoor inverter
PCB.
Replace outdoor inverter PCB.
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.
