Quartz CWM 105, Техническое руководство

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This instruction is also applicable to return air sensor spare 04000012S
The sensor can be fitted to the return air inlet to an air conditioning unit to improve operation eg. if the wall thermostat
is placed outside the space being conditioned, or if there is considerable stratification in a room with a high ceiling,
where the wall thermostat would not measure a representative temperature.
ITEM QTY DESCRIPTION
1 1 Sensor (4m lead)
2 2 Tie wrap
ISOLATE THE SYSTEM ELECTRICALLY PRIOR TO INSTALLATION OF THE SENSOR
1. Connect the sensor to terminals B1 and M , as shown (polarity is unimportant).
Changeover to the remote sensor is automatic on power up of the controller.
2. Tie wrap the sensor to a suitable place in the return airflow, where it will soak in a representative temperature.
3 . After installation, adjust the thermostat to confirm satisfactory operation.
Sensor input B1-M carries mains potential.
If the sensor cable needs to be extended, the cables used must be suitable for mains voltage.
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FAULT FINDING
CONDITION POSSIBLE CAUSE ACTION
A Indoor fan motor will not run
No electric supply at socket or switched fuse
box
Check fuse rating and replace if necessary.
Check for loose electrical connections
Unit wiring fault Check wiring and connections
Fan motor capacitor defective Replace if faulty
Fan motor defective Replace if faulty
B Inadequate cooling or heating Dirty coil fins/filter Clean if blocked
Fan motor not running at required speed As in section A
Faulty thermostat or incorrectly set Replace if faulty
C
System runs for long periods and will
not cycle
Unit underrated for conditioned area Check heat load against capacity
Thermostat not operating correctly Check wiring, position of phial and operation
D Noisy unit Worn motor bearing Replace motor
Casing or piping vibration Check cause and rectify
Loose parts or mounting Find and tighten
Bent fan blade Replace fan
E Water leaking from unit Blocked drain or filter Clear obstruction
Units with a lift pump or condensate
pump
No supply to pump or loose connection Secure the supply
Pumping slowly Check drain pipes; if clear, replace pump
Pump windings shorted Replace pump
Fouled sensor (5m condensate pump
only)
Clean sensor
F Pump always runs Faulty sensor or pcb Replace sensor or pcb
G No heating Controls not set for heating Reset
Unit wiring fault Check wiring and connections
Dirty coil fins/filter Clean
Faulty thermostat Check for signal; replace if faulty
Faulty heater element Replace
Faulty heater cutout Replace, (check for short circuiting)
No heaters/LPHW coil fitted Fit electric heater or LPHW
Heating valve not operating Check wiring, actuator
CWM L LED display diagnostics:-
Cool Dry Fan Heat
D I 4 F
Green Red Red Amber
BLINKS x 4 OFF OFF OFF Room sensor missing
BLINKS x 4
OFF OFF OFF Indoor coil sensor missing
BLINKS x 2 OFF BLINKS OFF Pump fault
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