Trouble Shooting - SystemAir SYSAQUAC 25 Manuel D'installation

18. TROUBLE SHOOTING

Problem
Unit operates Insufficient refrigerant fluid charge.
continuously
Clogged dehumidification filter.
but without
Reduced output from one or both
generating
circuits
cooling
The overheating setting on the
thermostatic pressure relief valve is too
Frozen intake
low.
line
Vibrating pipe work
Whistling noise from the thermostatic
pressure relief valve
Excessive noise
Noisy compressor
Presence of one or several oil or gas
leaks in the circuit
Low oil level in
Mechanical compressor damage.
the compressor
Sump oil heater resistance fault.
Electrical circuit cut.
High pressure pressostat activated.
Control circuit fuse blown.
Connection problem
One or both
Electrical circuits thermal protection
compressors do
cuts in.
not operate.
Incorrect wiring.
Mains voltage too low.
Compressor motor short–circuited.
Compressor seized
Presence of a leak.
Circuit stoppage
further to the
Insufficient refrigerant fluid charge.
low pressure
Pressostat operating fault.
thermostat being
activated.
Probable cause
30
Solution
Top up the refrigerant fluid charge.
Replace the dehumidification filter.
Check the compressor valves and change them if
necessary.
Increase the setting.
Check the refrigerant fluid charge
Attach the pipe work correctly.
Check the pipe work attachments.
Top up the refrigerant fluid charge.
Check and replace the dehumidification filter if
necessary.
Check the condition of the valves.
Seized bearings. Replace the compressor
Check the tightness of the compressor attachment
nuts.
Locate and repair the leaks
Contact an approved Service Centre.
Check the electrical circuit and the condition of the
resistance. Replace defective parts if necessary.
Check the electrical circuit and seek out any
grounding and/or short- -circuits. Check the fuses.
Reset the pressostat from the control panel and
restart the unit. Identify and eliminate the causes of
this activation.
Check the control circuit and seek out any
grounding and/or short-circuits. Replace the fuses.
Check the tightness of all the electrical connection
terminals.
Check the operation of the control and safety
devices. Identify and eliminate the cause of the
activation.
Check the wiring of the control and safety devices.
Check the power line. Eliminate any possible
problems associated with the system. If the
problem is due to the network, inform the Electricity
Company.
Check the continuity of the motor winding.
Replace the compressor.
Identify and repair the leak.
Top up the refrigerant fluid charge.
Replace the pressostat.