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Technical Notice CSO/CPO V1.1 / 10.14
10 Troubleshooting
HP contact open
- Ambient temperature too high
✔
Cut off the power supply
Cool down the local environment
Restart the unit by pressing the
pressure
controller
RESET
button (1)
Restart the power supply
- Filters (Option) fouled
✔
Clean or replace the filters
- Exhaust fan defective
✔
Clean the exhaust fan or change
it.
- Condenser fouled
✔
Clean the condenser.
The thermostat no longer controls the compressor
- Faulty probe (the alarm message
Er...
on the thermostat display)
✔
Replace the probe
- Faulty thermostat
✔
Replace the thermostat
The unit will not restart after a RESET (if option Y programmable problem recovery
controller is not installed)
- Problem in the LP section
✔
Call a refrigeration engineer
- If the refrigeration unit won't perform after a careful check following our procedures,
please call a local refrigeration engineer.
Fig. 10-2 : Pressure controller
(1)
