88226673-01-03 Technical Reference Manual - (Production Iss 03 November 2020).pdf - 第30页
Fault Indication – Heater Circuit Breaker Open (Automatic Shutdown) YES NO YES Isolate mai ns s upply from TM TCM, re set 10A He at er MCB an d p ow er u p TM TC M. Is the Hea t er functioning correctl y now? Is fault in…
YES NO
Empty Condensate
Container
LED 1
Run
LED 2
Probe
LED 3
N/A
LED 4
N/A
LED 5
ACU ON
LED 6
Heater ON
LED 7
System Tripped
LED 8
Cond. bottle needs emptying
LED 9
Cond. bottle is full
LED 10
Cond bottle overflow
Remove connector CN8 from control PCB.
Has the fault cleared?
Remove connector CN8 from control PCB.
Has the fault cleared?
YES
NO
YES
NO
Replace Control PCB
Part No. 181984
Replace Level
Sensor
Part No. 226839
Use TCM CCT DWG 226671 as reference for further
fault finding.
Warning Indication - Condensate Container
Over Full (Automatic Shutdown)
Has the Condensate Container been
emptied?
Fault Indication – Heater Circuit Breaker Open
(Automatic Shutdown)
YES NO
YES
Isolate mains supply from TM TCM, reset
10A Heater MCB and power up TM TCM. Is
the Heater functioning correctly now?
Is fault indication still present?
Replace Heater
Modules(s)
Part No. 173772
LED 1
Run
LED 2
Probe
LED 3
N/A
LED 4
N/A
LED 5
ACU ON
LED 6
Heater ON
LED 7
System Tripped
LED 8
Cond. bottle needs emptying
LED 9
Cond. bottle is full
LED 10
Cond bottle overflow
Use TM TCM CCT DWG 226671 as reference for
further fault finding.
Check following components for failure:
Control PCB Part No.181984
10A MCB Part No. 181986
Contactor Part No. 181989.
(If MCB is a ‘C’ Type then fit replacement ‘D’
Type Part No 202405).
Reset MCB does it stay ON?
Is the 1A MCB in the ON position?
Is the green indicator lamp next to the isolator illuminated
when the isolator is turned on?
Is 24V DC present on PSU output
terminals?
Reconnect CN4
No Beacon Lamps Illuminated
YES NO
YES NO
YES NO
YES
NO
Is there 24V DC across Pin 1 and Pins
2-6 on control PCB CN2?
YES
NO
LED 1
Run
LED 2
Probe
LED 3
N/A
LED 4
N/A
LED 5
ACU ON
LED 6
Heater ON
LED 7
System Tripped
LED 8
Cond. bottle needs emptying
LED 9
Cond. bottle is full
LED 10
Cond bottle overflow
Use TM TCM CCT DWG 226671 as reference for
further fault finding.
Replace Control PCB
Part No. 181984
Check beacon lamps.
Replacement Beacon Part No. 178762
Restore mains
supply to TM TCM.
230V +/- 10% (207V
to 253V working
range) 50/60Hz
Disconnect CN4 from Control PCB.
Is 24V DC present on PSU output
terminals?
YES NO
Disconnect CN4 from Control PCB.
Reset MCB.
Does it stay ON?
NO
Replace PSU Part No. 181987
Reconnect CN4.