Troubleshooting - CLIMAVENETA i-ACCURATE i-AX Installation Manual - User And Maintenance

TROUBLESHOOTING

Troubleshooting is simplified by the information provided by the
microprocessor controller: if an alarm is signalled, refer to the
control panel instruction manual.
FAULT
THE AIR-CONDITIO-
NER DOESN'T START
ROOM TEMPERATURE
TOO HIGH
ROOM TEMPERATURE
TOO LOW
68 English 09/10
CAUSE
The electrical panel is not powered
The auxiliary circuits are not powered
The control panel does not start the
air-conditioner.
The parameter settings on the microprocessor
controller are not correct.
The air flow-rate is too low or null.
The probe isn't working.
Thermal load higher than expected.
The compressor/compressors don't start,
despite being activated by the controller.
The parameter settings on the
microprocessor controller are not correct.
The power of the heaters is not sufficient or
the heaters aren't working.
The hot water coil isn't working correctly.
The hot gas post-heating system isn't working
during the dehumidification plus post-heating
phase
If required, contact the nearest service centre, indicating the
probable causes of the fault.
Check for voltage; close the main switch.
Check that the cutout IM in the auxiliary cir-
cuits is armed.
Check the fuse on the main board.
Check for DC power.
See the controller manual.
See "LOW OR NO AIR FLOW".
Check the electrical connections and the
configuration of the controller.
Check the thermal load in the room being
air-conditioned.
See "THE COMPRESSOR/COMPRESSORS
DON'T START".
See the controller manual.
Check that the heater thermal cutout is armed.
Check the power supply to the electric heaters.
If the heater safety thermostat is activated,
resolve the causes and reset the alarm.
Check the flow-rate and the temperature of
the water hot.
Check the operation of the control valve
and the servomotor.
Check the operation of the hot gas three-way
valve;
Check the operation of the compressor used
for post-heating: in this case, see "THE
COMPRESSOR/COMPRESSORS DON'T
START".
i-ACCURATE i-AX - i-AW - i-AD - i-AT - i-AF
U I A
SOLUTION