Hc-00" - Domestic Hot Water Temperature Error; H0-00" - Voltage/Current Sensor Problem - Daikin EDLQO5CAV3 Service Manual

ESIE15-08B | Part 2. Troubleshooting
2.25. "HC-00" – Domestic hot water temperature error
Trigger
Abnormal value detected (open or short
circuit) for DHW tank thermistor.
Possible cause
Faulty DHW tank thermistor R5T.
Faulty hydro PCB A1P.
Faulty wiring between outdoor unit - Con-
trol box - DHW tank.
2.26. "H0-00" – Voltage/current sensor problem
Trigger
Faulty power supply conditions are
detected before or right after compressor
start-up.
• Supplied voltage is too high or too
low?
• Compressor current doesn't run
when te compressor is started.
Possible cause
Faulty compressor.
Faulty outdoor inverter PCB.
Faulty outdoor main PCB.
19/07/16
Daikin Altherma Monobloc CA
Effect
Unit will keep operating.
Check
Check thermistor R5T (see page 70).
Check if the alive led is blinking in regular
intervals.
Check if the correct spare part is installed.
Check if hydro PCB A1P receives power.
Check wiring (power supply, connections
between PCB's, ...).
Effect
Unit will stop operating.
Check
Check compressor (see page 91).
Check compressor connection and wiring.
Check expansion valve operation (liquid
back issue).
Check refrigerant charge (see page 106)
+ check for leaks.
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.
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.
2. Error code based troubleshooting
Reset
Auto reset when problem is solved.
Corrective action
Replace thermistor R5T when required
(see page 124).
Adjust the power to the PCB.
Replace hydro PCB A1P when alive led is
not blinking in regular intervals.
Adjust software of hydro PCB A1P or
install correct spare part when required.
Adjust wiring when required.
Reset
Manual reset via user interface.
Corrective action
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 inverter
PCB.
Replace outdoor inverter PCB when
required (see page 122).
Adjust the power to the outdoor main
PCB.
Replace outdoor main PCB when alive led
is not blinking in regular intervals (see
page 119).
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