EN - 20
5.4 The fault relays
One relay per fault summary level is provided
-
"Maintenance" fault summary
-
"Danger" fault summary
"Maintenance" faults are faults which only send information to notify the operator. They can be validated by pressing the
key
for 3 seconds if they have disappeared.
The "Danger" faults, which are of a higher level, are faults which send information to notify the operator, but also start a process
to secure the unit. They can be cleared by pressing the
key if they have disappeared.
6 - ALARMS
6.1 Description of faults displayed in the alarms menu
6.1.1 Fan fault
After the fan command, if the fan operation feedback is not closed (P261) after 10 seconds, the fan fault is activated.
The fan fault is a danger fault.
6.2 Fault table
* All possible options are covered by this table
Faults
Sources
Causes
Solutions
Fan
ID3 fan operation feedback
- Embedded thermistor faulty
- Circuit breaker
- Current too high
- Switch coil
- See causes
- Reset or replace
- Monitor starting current
- Replace coil or contactor
Air flow rate
Supply air flow rate pressure
sensor
0-1000 Pa
B1
- Belt faulty
- Filter not installed
- Malfunction
- Sensor disconnected
- Fan
- Change belt
- Install filter
- Replace sensor
- Reconnect sensor
- See fan fault
Filter dirty
Filter differential pressure
sensor
0-1000 Pa
- Filter fouled
- Clean or replace filter
Filter blocked
Filter differential pressure
sensor
0-1000 Pa
- Filter too dirty
- Replace filter
Isolation damper
Damper limit switch
ID5
- Closing problem
- See causes
Pump
Pump operation feedback
ID2
- Electrical protection fault
- No water flow
- See causes
- See causes
Summary of Contents for Carrier 42AM
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