York YKHC 18, Service Manual

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Part11. Servicing and maintenance
1. Troubles and Solutions
If any the following abnormal conditions occur, turn off the power supply immediately. Please contact our dealer.
Indicator lamps flash rapidly, after your disconnecting and connecting the unit, the
situation is the same.
Fuse or circuit breaker work frequently.
Foreign matter or water has fallen into the unit.
Remote controller is disabled or the switch is out of hand. TROUBLES
Any other unusual conditioner is observed.
If any of the following conditions occur, check your unit and resolve corresponding problems referring to given
remediation. If the trouble can't be settled contact our dealer.
Trouble Cause Solutions
Power failure. Wait for the comeback of power
Power switch is open. Switch on the power
Fuse of power switch may have blown. Replace the fuse
Batteries of remote controller are exhausted. Replace the batteries
Unit does not start
The time is not start-up time you have set. Wait or cancel the time set.
Temperature is not set correctly. Set the temperature properly.
Door or window is open. Close door and window.
Air filter is blocked with dust or dirtiness. Clean the air filter.
Inlet/outlet of indoor/outdoor units are blocked. Clear all blockages.
Inlet/outlet of indoor/outdoor units are blocked. Clear the blockage, then restart your
operation.
Air flowing normally
with low
cooling(heating)
effect
Be in 3 minutes protection of compressor Wait
NOTE: Do not replace electric wire or repair the air conditioner by yourself to avoid possible danger.
2. Troubles and solutions concerning the remote controller
Please make the following check before asking for repair or maintenance.
Trouble Cause Solutions
Check if the mode display on the
LCD is AUTO The lndoor Unit will select fan speed
automatically when AUTO mode is
selected. CAN NOT CHANGE THE
FAN SPEED SETTING
Check if the mode display on the
LCD is DRY The lndoor Unit will select fan speed
automatically when the unit is on
DRY mode.
The transmission symbol does not flash
Symptom Checking items Cause
Press ON/OFF button, the remote
controlling signals can not be transmitted Check if the remote controller
has run out of power When the battery was out,
transmission signals can not be sent