Daily Maintenance - Johnson Controls YORK ENJC 09 D-R Instructions D'installation

by johnson controls
Troubleshooting
Should the air conditioning unit not operate correctly, please check the following points.
NOTE: Should the problem persist after having checked these points, contact your closest technical service.
Problem
The unit is totally inoperative.
The unit goes off after start-up.
Does not cool sufficiently.
Does not heat sufficiently.
Indoor fan inoperative in heat mode.
Maintenance

Daily maintenance

1. Clean air filter.
2. Do not remove filter without cleaning it.
3. The filter should be cleaned very frequently
when operating in bad conditions (every
two weeks is recommended).
NOTE: Please check the following points
prior to cleaning the unit.
1. Disconnect power supply before touching
the unit.
2. Turn the unit off prior to cleaning so as to
avoid electric discharges.
3. Do not pour water directly on the unit as
this could cause electric discharges.
4. Make sure the installation is firmly in
place.
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Cause
- No power supply.
- Main switch is off.
- Power supply voltage is insufficient.
- START/STOP set to STOP.
- Control system failure.
- Condensing unit air intake our outlet obstructed.
- Irregular operation of control circuit.
- Outdoor temperature is above 43° C in cooling mode.
- Dirty air filter.
- Too many heat sources in the room.
- Doors or windows open.
- Air intake or outlet obstructed.
- Temperature selected is too high.
- Refrigerant leak.
- Problems with the temperature sensor.
- Dirty air filter.
- Doors or windows open.
- Air intake or outlet obstructed.
- Temperature selected is too high.
- Refrigerant leak.
- Outdoor temperature is below -5° C.
- Irregular operation of control circuit.
- Pipe sensor in wrong position.
- Pipe sensor is cut off.
- Pipe sensor cable cut.
- Current leak in electric condenser.
Maintenance at the beginning
of each season
1. Check for obstruction of air intakes and
outlets.
2. Make sure the unit
correctly.
3. Make sure the air filter is installed
correctly.
4. Make sure letters appear on the wall
remote control unit LCD display after
turning the unit on.
NOTE: If you notice anything is incorrect,
contact your technical service.
GB
Maintenance at the end of each
season
1. Let the unit operate for half a day in vent
mode, on a sunny day, so as to dry it
internally.
is grounded
2. If the unit is not to be used for a long
period of time, disconnect power supply
and make sure the letters on the LCD
display disappear.