ESIE15-08B
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Part 2. Troubleshooting
2. Error code based troubleshooting
19/07/16
Page 23
Daikin Altherma Monobloc CA
2.8. “CJ-02” – User interface room temperature error
2.9. “C0-00” – Flow sensor error
2.10. “C0-01” – Flow switch warning
Water flow is too low.
Check the minimum water flow required
for the system. Refer to Installer Refer-
ence Guide.
Adjust system to meet the water flow
requirements.
Closed valve in water circuit
Check if all valves are open.
Adjust/open valve.
Air in water circuit.
Check if all air purge valves are open.
Check if air purge valves are installed on
all highest points of the field installed
water circuit.
Purge air out of unit and field supplied
water system and backup heater. Refer to
the Installer Reference Guide.
Trigger
Effect
Reset
Room temperature thermistor of user
interface detects an abnormal value (open
or short circuit).
Unit will keep operating.
Auto-reset.
Possible cause
Check
Corrective action
Faulty room thermistor of user interface.
Check room thermistor read out value via
the user interface and compare with
actual room temperature.
Replace user interface or replace hydro
PCB A1P when required.
Trigger
Effect
Reset
Flow sensor still detects a water flow after
45 seconds when pump has stopped.
Unit will stop operating.
Manual reset via user interface.
Possible cause
Check
Corrective action
Water flow caused by external pump.
Check if another (external) pump is
installed on the same water circuit.
Correct hydraulic field circuit. Refer to the
Installer Reference Guide.
Faulty flow sensor.
Check flow sensor (see page 81).
Replace flow sensor when required.
If flow sensor failed due to contamination,
check for source of contamination and
consider to install an additional water fil-
ter.
Faulty hydro PCB A1P.
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.
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.
Faulty wire harness
Check the wire harness and the connec-
tion to hydro PCB A1P.
Replace the wire harness when required.
Trigger
Effect
Reset
Unit detects flow when pump is not run-
ning.
Unit will stop operating.
Auto reset.
Possible cause
Check
Corrective action
See possible causes for C0-02.
