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Air conditioner cannot start
1. Power supply plug disconnected.
2. Circuit breaker or fuse tripped / blown.
3. Wiring connection
4. If fault persist, contact your installer
Neither fan coil unit
and compressor run
1. The fuse may be blown or circuit breaker opened.
2. Check electrical circuit or motor winding for shorts or grounds. Investigate
for possible over loading. Replace fuse if necessary.
3. Check wiring connections. Wire may be loosening. Replace or tighten.
4. Control system may be faulty
Compressor does not operate.
1. Check capacitor if available. Replace capacitor if faulty.
2. Check wiring connection. Wire may be loosening. Replace or tighten.
3. The high pressure switch may tripped due to:
a) No or insufficient water flows into and leaves heat exchanger. May
be clogged.
b) Water entering temperature higher than the maximum operating
conditions.
c) Not enough air flow into fan coil unit. May be due to dirty filter or
block by object, cardboard and etc (heating mode).
d) Fan coil motor failure (heating mode).
e) Unit over-charged. Release some of the refrigerant charge.
4. The compressor internal/external overload protection is opened. If the
compressor body is extremely hot, the overload will not reset until it cooled down.
5. The compressor winding may be grounded to the compressor shell. If so,
replace the compressor.
Insufficient cooling or heating.
1. Check controller temperature setting.
2. Filter may be clogged. Check and clean the filter.
3. Check capillary tube for possible restriction of refrigerant flow. Replace
capillary tube if proven so.
4. The reversing valve may be defective (valve position is not shifted properly),
creating a bypass of refrigerant. Check the reversing valve coil connection.
5. Check for restriction of air and water flow.
6. Refrigerant leakage. Check all piping bends and connection for leakage.
Repair the leakage area or replace with new piping.
7. Window or door wide open.
8. Unit may be under-sized.
Remote control
display light is too dim.
1. Battery flat. Replace the battery.
2. The batteries are not properly positioned
Insufficient water flow
through heat exchanger
1. Valves are not opened fully.
2. Circulating water pump is faulty.
3. Water pipes or strainers are clogged.
Noisy operation
1. Check for loose bolts or screws.
2. Make sure rubber isolators are used for installation.
3. Check for water balance to unit for proper water flow rate.
4. Check for tubing touching compressor or other surface. Readjust tubing by
bending it slightly.
5. Fan (fan coil unit) knocking / hitting on its housing.
6. May be due to worn compressor bearing.
When a malfunction of the air conditioner unit is detected, immediately switch off the main power supply
before proceeding with the following troubleshooting procedures.
The following are common fault conditions and simple troubleshooting tips. If any other fault conditions
which are not listed occur, contact your nearest local dealer. DO NOT attempt to troubleshoot the unit by
yourself.
12. TROUBLESHOOOTING
Содержание AWSS30A
Страница 1: ...Technical Manual WATER COOLED SINGLE SPLIT AWSS30A AWSS40A AWSS50A AWSS60A...
Страница 13: ...13 Refrigerant Circuit Diagrams Model AWSS 30 40 50 60A...
Страница 63: ...107 Indoor Unit MODEL ACC30C Outdoor Unit MODEL AWSS30A 10 WIRING DIAGRAMS...
Страница 64: ...108 Indoor Unit Model ACC40 50 60C Outdoor Unit Model AWSS40 50 60A...
Страница 65: ...110 Indoor Unit Model ACK30A Outdoor Unit MODEL AWSS30A...
Страница 66: ...111 Indoor Unit Model ACK40 50A Outdoor Unit MODEL AWSS40 50A...
