Table Of Alarms - Carrier CCU Regelungshandbuch

11 - COMMISSIONING

11.3 - Table of alarms

Faults
Filtration fouled
Filtration blocked
Pressure sensor
No air flow
Fan/motor Circuit breaker
Electric heater Electric heater
Humidifier
No production of
Condensation unit
Water leak Water leak sensor
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
Fan stopped
Belts
Switch
Motor
Embedded
thermistor
Overheating
No heating
Humidifier The humidifier does not work
Cylinder Cylinder dirty
No water in the cylinder
steam
Drain Pan overflowing
Refrigeration stopped
Pan overflowing
Coil or humidifier leak
Temperature
sensor
Eprom memory
Fault with the CPU board
battery - the timer has
stopped working
Solutions
• 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
• C heck 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
• C heck the switches, the circuit breakers, the triac (option), the
control component
• Reset the thermostat (clear the fault before resetting)
• Check the supply voltage
• C heck 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
• R efer to the manual or to the unit's controller to troubleshoot the
fault
• 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
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