L1-00" - Outdoor Main Pcb Abnormality; L3-00" - Switch Box Temperature Abnormality - Daikin EDLQO5CAV3 Service Manual

ESIE15-08B | Part 2. Troubleshooting
External factor (e.g. electrical noise)
(cause when error is reset after power
reset, and error happens again after
awhile).
2.38. "L1-00" – Outdoor main PCB abnormality
Trigger
Outdoor main PCB detects current / volt-
age errors.
Possible cause
Faulty or disturbance of the power supply.
(Imbalance > 10%) Power drop.
Short circuit.
Faulty compressor.
Faulty outdoor main PCB.
External factor (e.g. electrical noise)
(cause when error is reset after power
reset, and error happens again after
awhile).
Faulty fan motor.
Blown fuse.
Faulty outdoor inverter PCB.
2.39. "L3-00" – Switch box temperature abnormality
Trigger
Switch box temperature is too high when
the compressor is off.
Possible cause
Faulty outdoor inverter PCB.
Faulty radiation fin thermistor.
Page 36
Daikin Altherma Monobloc CA
Check for source which could cause elec-
trical interference.
Effect
Unit will stop operating.
Check
Check if the power supply is conform with
regulations. No fluctuations in frequency.
Check compressor (see page 91).
Check compressor connection and wiring
(see page 144).
Check expansion valve operation (liquid
back issue).
Check refrigerant charge (see page 106)
+ check for leaks.
Check if the alive led is blinking in regular
intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives
power.
Check for source which could cause elec-
trical interference.
Check fan motor (see page 103)
Check fan motor connection and wiring.
Check fuse on outdoor main PCB.
Check outdoor inverter PCB (see
page 101).
Check if the alive led is blinking in regular
intervals.
Check if the correct spare part is installed.
Effect
Unit will not stop operating.
Unit will stop operating.
Check
Check outdoor inverter PCB.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
2. Error code based troubleshooting
Reset
Manual reset via user interface (power
reset might be required).
Corrective action
Adjust power supply when required.
Power reset via outdoor unit.
Replace the compressor when required.
(see page 125).
Investigate the reason of breakdown.
Replace expansion valve when required
(see page 131).
Fix the possible leak.
Adjust the power to the outdoor main
PCB.
Replace outdoor main PCB when alive led
is not blinking in regular intervals (see
page 119).
Replace fan motor when required (see
page 116). Adjust wiring when required.
Replace fuse if blown.
Adjust the power to the outdoor inverter
PCB.
Replace outdoor inverter PCB when
required (see page 122).
Reset
Automatic reset when temperature drops.
Manual reset via remote controller.
Corrective action
Restore the power to the outdoor inverter
PCB.
Replace the outdoor inverter PCB when
required (see page 119).
19/07/16