York YM 09 V6 G, Technical Manual, Page: 6 / 8

6
8 - Maintenance
9 - Trouble-shooting Guide
The units are designed to operate for long periods of time with a minimum of maintenance. However, the following operations must be
performed regularly.
COMPONENT MAINTENANCE OPERATIONS RECOMMENDED FREQUENCY
Air filter 1 - Clean with a vacuum cleaner or tap gently then Every month or more
wash in warm water (40°C) with a mild detergent. often if necessary.
2 - Rinse and dry before replacing on unit.
3 - Never use petrol, alcohol or any other chemical
product.
Unit casing 1 - Remove dust from the front panel with a soft duster Every month or more
or wipe a damp cloth with a mild soap solution. often if necessary.
2 - Never use petrol, alcohol or any other chemical
product.
Drain pan and
1 - Clean and check for obstructions. Each season before start up.
evacuation piping
Indoor / outdoor coils 1 - Check condition and remove dust from between Each season before start up.
coil fins.
Compressor 1 - No maintenance required.
ALL OTHER SERVICE AND MAINTENANCE OPERATIONS MUST BE PERFORMED
BY TRAINED AND QUALIFIED PERSONNEL APPROVED BY THE SUPPLIER
P
ROBLEM
A. The air conditioner does not operate
B. The air conditioner operates but
produces no cooling
C. Evaporator frosted
D. No heating
P
ROBABLE CAUSE AND REMEDY
1. Check that the unit is plugged in and that the circuit is not overloaded by
other electrical appliances.
2. Check fuses and /or circuit breaker and make sure that power is getting to
the unit.
3. If the fuse has been changed and it blows when the unit is restarted, or if the
circuit breaker cuts out immediately after it has been reset, do not hesitate
to contact your approved service centre.
1. Make sure that the thermostat is set to the right position for cooling.
2. Make sure that there are no obstacles in front of the unit that might impede
proper air circulation.
3. Make sure that the horizontal dampers open correctly.
4. Remove the decorative front panel and check that the thermostat bulb does
not touch the coil fins since this can cause compressor short-cycling.
5. Make sure that the filter is clean
6. Check that the evaporator coil is not frosted up
1. Make sure that the filter is clean. Wash with water if necessary.
2. To clear frost from the coil, place the selector at the Ventilation Only position.
3. Make sure that all the frost has been cleared from the coil before resuming
normal operation.
1. Make sure that the function selector is in the Heating position.
2. Make sure that the filter is clean.