42Ama Control; The Fault Relays; Alarms; Description Of Faults Displayed In The Alarms Menu - Carrier 42AM Regelungshandbuch

5 - CONTROL

5.3 - 42AMA control:

42AMA units are destratifiers which can only be controlled according to the ventilation speed.
This is calculated from the difference between the room temperature measured by the sensor in the Single-Phase EC Master Box (or
remotely if this option has been chosen) and the sensor fitted in the 42AMA units.
P123
Max. speed
42AMA
P122
Min. speed
42AMA

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
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

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

Faults
Fan ID3 fan operation feedback
Supply air flow rate pressure sensor
Air flow
0-1000 Pa B1
Filter dirty 0-1000 Pa filter differential pressure sensor
0-1000 Pa filter
Clogged filter
differential pressure sensor
Isolation damper ID5 damper end of travel switch
Pump ID2 pump operation feedback
* All possible options are covered by this table
40
XX7515390-03_CONTROL_11_2019_BOX_MONO_EC_42AM.indb 40 XX7515390-03_CONTROL_11_2019_BOX_MONO_EC_42AM.indb 40
P155 ∆t setpoint
key if they have disappeared.
Sources
∆t = T°
P156 Max. ∆t
Causes
- Embedded thermistor faulty - See causes
- Circuit breaker - Reset or replace
- Current too high - Monitor starting current
- Switch coil - Replace coil or contactor
- Belt faulty - Change belt
- Filter not installed - Install filter
- Malfunction - Replace sensor
- Sensor disconnected - Reconnect sensor
- Fan - See fan fault
- Filter fouled - Clean or replace filter
- Filter too dirty - Replace filter
- Closing problem - See causes
- Electrical protection fault - See causes
- No water flow - See causes
T°
42AMA -
42AM
key for
Solutions
03/12/2019 11:11:29 03/12/2019 11:11:29