FRIULAIR PURESTREAM CWB FC, Руководство пользователя и по обслуживанию

Страница: 40 / 48

35
7425MUM661 Model: CWB FC - Use and Maintenance Manual Rev02
10
TROUBLESHOOTING
Cause Alarm signal or
symptom
Solution Execution
1. The unit does not start
Contacts of the main differential switch
open.
Electronic controller off Close the contacts
User
Unit's electrical panel cut-off switch
open.
Electronic controller off Close the contacts
User
Local/O/REM switch in the O or REM
position
Electronic controller on Move the switch to I User
No consent from the water differential
switch
A03
Evaporator flow switch alarm
Check the functioning of the
pump, vent the piping
User
Compressor timer active
The compressor icon on
the display of the
electronic controller is
flashing
Wait 3 minutes User
No consent from the service
thermostat
Plant water at
temperature (see
display A)
Apply a thermal load to the
machine or lower the set point
User
No consent from the anti-freeze
thermostat
AE1
Evaporator ice alarm
Reset a temperature of the
water (set point) compatible
with the calibration of the anti-
freeze thermostat (see table
in paragraph 6.2)
User
Service and anti-freeze probe
defective
A7B
Alr. Probe Tout evaporator
Check contacts and replace, if
necessary
Specialised
personnel
Entering water temperature probe
defective A7A
Alr. Probe Tin evaporator
Check contacts and replace, if
necessary
Specialised
personnel
Intervention of the main differential
switch
Electronic controller off
Look for current dispersion
inside the machine
Specialised
personnel
2. The compressor doesn't start
Intervention of the thermal protection
inside the compressor 1 or 2
The contactor of the
compressor is on but
the compressor is
stopped
A32
Compressors 1 2 Internal
Protection
A33
Compressors 3 4 Internal
Protection
Wait for cooling: check that
the compressor is working
under normal conditions.
Check for insufficient
refrigerant in the circuit (see
point 8).
Specialised
personnel
Intervention of the thermal protection
inside the compressor 3 or 4