Acson air conditioner troubleshooting

It is not always necessary to call a specialist in order to eliminate the breakdown of climate equipment. You can do a lot with your own hands. You only need to learn about typical malfunctions of air conditioners and about ways how to fix them. You can read about it in the table.

Acson RCM 20 D air conditioner troubleshooting

1. Fan does not work 3 minutes after starting• Protection against the frequent starting. Wait 3 or 4 minutes.
2. The air conditioning unit does not work• Power failure or you must be replaced the fuse.
• The power plug is disconnected.
• Possibility of making a programming error in the controller.
• If the fault persist after these verifications, contact your installer.
3. The air conditioning unit does not blow sufficiently• The air filter is dirty.
• The doors or windows are open.
• The air entrance and exit are clogged.
• The regulate temperature is not high enough.
4. The remote control light is deficient• The batteries are discharge.
• The batteries are not correctly inserted.
• The assembly is not good.
5. Air discharge flow has a bad odor• This odor can be caused by cigarette smoke particles, perfume, sweat, which stick to the coil.
• Check if there is any moisture on the walls, garment, other.
• Check the drain pan.
6. Condensation on the air grille of indoor unit• This is due to air humidity after a long time of operation.
• The unit has a lower temperature point, increase the point and operate at high speed.
7. The water flow of air conditioning unit• Check the condensate evacuation.
8. The air conditioning unit is noisy• “Air flow noise”: refrigerant fluid admission in evaporator.

Acson WSS10A air conditioner troubleshooting

FaultCause/Check Point
Unit cannot start1. 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 run1. 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 operate1. 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 cooling1. 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.
Insufficient water flow through heat exchanger1. Valves are not opened fully.
2. Circulating water pump is faulty.
3. Water pipes or strainers are clogged.
Noisy operation1. 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 wom compressor bearing.