SystemAir HAN 13, Руководство по установке и обслуживанию

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20 HAN
18. TROUBLE SHOOTING
Problem Probable cause Solution
Unit operates
continuously but
without performing
Insufficient refrigerant charge. Top up the refrigerant fluid charge.
Reduced output
Check the 4 way valve on the compressor and replace the
valve if necessary.
Frozen suction line
The overheating setting on the thermostatic
expansion valve is too low.
Increase the setting.
Insufficient refrigerant charge Add refrigerant charge.
Evaporator freezing
Filters clogged Replace filters
Insufficient charge Add refrigerant charge.
Excessive noise
Vibrating pipe work
Attach the pipe work correctly.
Check the pipe work attachments.
Whistling noise from the thermostatic expansion
valve
Add refrigerant charge.
Noisy compressor Check the pressure difference of the 4-ways valves.
No pressure increase / mechanical damage to the
compressor
Contact an approved Service Centre.
Low oil level in the
compressor
Presence of one or several oil or gas leaks in the
circuit
Locate and repair the leaks and add oil
Mechanical compressor damage. Contact an approved Service Centre.
Crankcase oil heater resistance fault.
Check the electrical circuit and the condition of the
resistance. Replace defective parts if necessary.
compressor do not
operate.
No power at compressor
Check the electrical circuit and seek out any grounding
and/or short- -circuits. Check the fuses.
High pressure pressostat activated. Check for dirty condenser coil or defective fan
Control circuit fuse blown.
Check the control circuit and look for any grounding and/or
short-circuits. Replace the fuses.
Connection problem
Check the tightness of all the electrical connection
terminals.
Electrical circuits thermal protection cuts in. Check the operation of the control and safety devices.
Incorrect wiring. Check the wiring of the control and safety devices.
Mains voltage too low.
Check the power line.If the problem is due to the network,
inform the Electricity Company.
Compressor motor short–circuited. Check the continuity of the motor winding.
Compressor seized Replace the compressor.
Low pressure
pressostat being
activated.
Presence of a leak. Identify and repair the leak.
Insufficient refrigerant fluid charge. Add refrigerant charge.
Low air volume on evaporator check the blower and duct
High pressure
pressostat being
activated.
Incorrect operation of the high pressure
pressostat.
Check the operation of the pressostat. Replace it if
required.
Outlet valve partially closed. Open the valve. Replace it if required.
Non-condensable particles in the circuit. Bleed the circuit
Condenser fan not operating.
Check the wiring and the motors. Repair and replace if
required.
Liquid line too hot
Insufficient refrigerant charge.
Locate and eliminate the causes of charge losses and top
up the refrigerant fluid charge.
Fans do not operate.
Electrical circuit problems. Check the connections.
Internal circuit thermal cut-out activated. Contact an approved Service Centre.
Fan surging
Duct network pressure too low.
Generate an additional pressure loss (refer to aeraulic
curves)
Reduced output in
both Heating and
Cooling mode
Compressor operating fault Contact an approved Service Centre.
Outdoor coil dirty Clean the coil.
Insufficient refrigerant charge. Add refrigerant charge.
Lack of air flow
Clean the battery
Replace the filter
Check the air flow / pressure settings