Troubleshooting Guide

1.Remote Maintenance
Possible causes of trouble
Power failure The main power tripped Loose connections Faulty transformer The voltage too high or too low The remote control is powered off The remote control is broken Dirty air filter Dirty condenser fins Fan mode Silence feature is activated (optional function) Frosting and defrosting frequently The setting temperature is higher/lower than the room’s (cooling/heating) The ambient temperature is too high/low when the mode is cooling/heating
Unit will not start
The power switch is on but fans will not start
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The temperature on the display board cannot be set
Unit is on but the wind is not cold(hot)
Unit runs, but shortly stops
The unit starts up and stops frequently
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Unit runs continuously but insufficient cooling
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Cool can not change to heat
Unit is noisy
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Test method / remedy
Test voltage Close the power switch Inspect connections - tighten Change the transformer Test voltage Replace the remote controller’s batteries Replace the remote controller Clean or replace Clean Adjust the setting temperature Turn on the AC later Turn on the AC later Adjust to cool mode Turn off the silence feature
Electrical Circuit Refrigerant Circuit
 Troubleshooting 14 