88226673-01-03 Technical Reference Manual - (Production Iss 03 November 2020).pdf - 第34页
Try repositioning the magnetic pipe clamps so as to eliminate the restriction in the drainage pipe. Is the water now draining from the ACU? NO Fault corrected Clea r the pipe and refit to ACU. Is the ACU now d ra ining? …
Rectify leak and empty Condensate
Container.
Ensure all moisture is removed from
around the probes. Rectify continuity
fault and reconnect CN10.
Fault indication cleared?
Are there any condensate leaks?
Check ACU condensate drain hose is not
blocked or kinked. Check condensate
container yellow drain cap is securely
fitted and its O ring seal is in place.
Replace Control PCB
Part No. 181984
Replace Flood Sensor Cap
NO
Warning Indication - Overflow on Lower
Collection Tray (Auto Shutdown)
YES NO
NO
NO
NO
Use TCM CCT DWG 226671 as reference for further
fault finding.
YES
Is there continuity between the two
Flood Sensor probes?
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
Check the second condensate
tray in the chiller (requires
removal of chiller cover), does
this solve the problem?
Remove the green connector from CN10.
Does this clear the fault indication?
Try repositioning the magnetic pipe clamps so
as to eliminate the restriction in the drainage
pipe.
Is the water now draining from the ACU?
NO
Fault corrected
Clear the pipe and refit to ACU.
Is the ACU now draining?
Internal condensation collection tray within the
ACU may have overflown. This could be caused by
a blocked or kinked drainage pipe.
Is there a kink in the drainage pipe?
Check the nozzle on the
side of the ACU to
which the drainage pipe
is connected.
Is it blocked?
ACU has shut down with no warning indicated
Unit unable to maintain set temperature.
YES NO
YES
YES
NO
YES
NO
An internal examination of
the ACU may be required.
Please contact a support
engineer
Use TCM CCT DWG 226671 as reference for
further fault finding.
Clear blockage
Place an absorbent cloth around the
drainage outlet on the ACU and
remove the drainage pipe.
Be prepared to cap the flow of water
from the ACU it is backed up.
Is the Pipe blocked?
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
YES
NO
YES
YES
Connect the interface cable
to the TCM and
Condensation Collection
Module.
Has the fault corrected?
Has the interface cable between the condensation collection
module and the TCM been installed correctly?
Warning Indication – Condensation collection
Module not connected (Automatic Shutdown)
Contact a support
engineer
Fault corrected
Contact a support
engineer
Replace Cable
Part No. 226129
Check cable continuity
See wiring diagram
ASM-226129.
Is the cable correct?
NO
NO
Use TCM CCT DWG 226671 as reference for further fault
finding.
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