88226673-01-03 Technical Reference Manual - (Production Iss 03 November 2020).pdf - 第24页
Issue 03 November 2020 Electrica l Faults Error Remedy Red Bea c on (No Blue) (TCM Shutdown ) Check ACU circuit breaker is closed. Check heater circuit brea ker is cl osed Heater Enclosu r e Thermal Trip may have opera t…
Issue 03 November 2020
Display and Condensate Error Checklist
ERROR
REMEDY
PV displayed as flashing 0:0
Printer turned off or not initialized.
Temperature Sensor Loom between
Printer and TCM disconnected. Check
connections.
SV not reached within 40
minutes.
PV not maintained within +/-
1°C of SV.
Check that the Printer side safety covers
are fitted.
Check Air In and Air Return Vents are not
obstructed.
Check all Printer covers are fitted and
closed.
Check Controller PV is not displayed as
0:0 (see above).
Check SV is set to a value within +/-
3°C of ambient temperature.
Check ACU condenser grills are not
blocked or obstructed.
No beacon and/or Controller display (see
electrical faults section).
TM TCM fails to move PV towards SV.
Possible fault with ACU, Heater, or Control
Module. ESCALATE
Check supply voltage has not dropped
below 207V
Possible anomaly of the Controllers
EPROM memory. Press the key.
ErEP displayed on Controller
Condensate Container Full and
approaching Overflow condition. Empty
Condensate Container.
Blue and Red Beacon
(TM TCM Shutdown)
Condensate on Lower Tray. Drain
condensate from tray and ensure
Condensate Container is in place and
container is not leaking.
Issue 03 November 2020
Electrical Faults
Error
Remedy
Red Beacon (No Blue)
(TCM Shutdown)
Check ACU circuit breaker is closed.
Check heater circuit breaker is closed
Heater Enclosure Thermal Trip may have
operated due to an over temperature
condition.
Investigate cause of failure. ESCALATE
No display on Beacon or
Controller
Check Control Module circuit breaker is
closed.
FIG 28
Circuit Breakers (located inside the electrical compartment) protect components and
wiring in the 24Vdc Control (C1), Heater (C10), and Air Conditioner Unit (C6) circuits
from excessive currents. Should a circuit breaker open, the cause must be investigated
before closing and re-energizing the circuit. ESCALATE if fault persists and Circuit
Breaker will not remain closed.
Diagnostic Flow Charts
Flow charts on following pages
WARNING
ELECTRICAL HAZARD. Ensure Isolator is in the OFF
position before removing access panel.
C1 C10
C6
Fault Indication - ACU MCB Has
Tripped
YES
NO
YES
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 mains supply voltage is within
operating range of 207 – 253V.
Isolate mains supply from TM TCM, reset
6A ACU MCB and power up TM TCM.
Is the ACU functioning correctly now?
Is fault indication still present?
Contact an Engineer
Use TM TCM CCT DWG 226671 as reference for further
fault finding.
Use TM TCM CCT DWG 226671 as reference for
further fault finding.
Check following components for failure:
Control PCB Part No. 181984
6A MCB Part No. 181985
Contactor Part No. 181989.