Carrier CCU Controller Bedienungsanleitung Seite 63

TABLE OF ALARMS
Faults
Filtration fouled
Filtration blocked
Pressure sensor
No air flow
Fan/motor
Embedded thermistor
Electric heater
Humidifier
No production of
Water leak Water leak sensor
Sensor Temperature sensor
No more operation or display
The time is wrong
Sources Causes
Filter fouled
Filter too dirty
(ventilation stopped)
Belts
Filters
Fan
Damper
Motor
Network
Belts Fan stopped
Switch
Circuit breaker
Motor
Overheating
Electric heater
No heating
Humidifier The humidifier does not work
Cylinder Cylinder dirty
No water in the cylinder
steam
Drain Pan overflowing
Pan overflowing
Coil or humidifier leak
Eprom memory
Fault with the CPU board battery
- the timer has stopped working
• Clean or replace the filter
• Replace the filter
• Check the tension
• Replace the belts
• Clean or replace
• See fan fault
• Check the opening
• Check the servomotor
• Check the direction of rotation
• Check the network pressure drop
• Check the belts
• Check the motor's power supply
• Check the switch, the circuit breaker setting, the motor's embedded
thermistor
• Check the motor cooling
• Measure the input current
• Check the air flow rate
• Measure the input current
• Measure the supply voltage
• Check the fan delay duration
• Check the supply voltage
• Check the switches, the circuit breakers, the triac (option), the control
component
• Reset the thermostat (clear the fault before resetting)
• Check the supply voltage
• Check the switch, the circuit breaker, the control component and the
humidifier control panel
Change the cylinder
• Check the water supply
• Check that the valve is operating correctly
• Check the power supply to the electrodes
• Add a handful of salt to the cylinder
• Refer to the indications on the humidifier control panel
• Check that the drain valve is operating correctly
• Check that the drain circuit is not blocked
• Check that the siphon is of the correct design
• Check the priming of the siphon
• Check that the condensate is draining correctly
• Check that the air flow is not too high
• Find the leak and stop it
• Check the sensor
• Check the connection and continuity of the cable
• Contact CARRIER After-Sales
• Change the battery
EN - 25
Solutions
EN