
COMMERCIAL IN CONFIDENCE
MEC-PM-798 MEC Starter Kit ManualMEC-PM-798 MEC Starter Kit ManualMEC-
PM-798 MEC Starter Kit Manual
Page 21
16
Ambient
temperature
sensor short-
circuit
Ambient temperature
sensor short-circuit.
Check ambient sensor.
Check the wiring between the ambient sensor
and the control system.
Check sensor is fitted correctly.
Sensor should be 10K NTC thermistor.
Sensor connection to PCB:
J12:19 (REFERENCE)
J12:20 (SIGNAL)
No action, Reported
only
17
Ambient
temperature
sensor open-
circuit
Ambient temperature
sensor open-circuit.
Check ambient sensor.
Check the wiring between the ambient sensor
and the control system.
Check sensor is fitted correctly.
Sensor should be 10K NTC thermistor.
Sensor connection to PCB:
J12:19 (REFERENCE)
J12:20 (SIGNAL)
No action, Reported
only
18
PCB temperature
protection
PCB over-
temperature or
under-temperature.
Check PCB temperature.
Normal Shutdown,
Automatic Reset
(30 seconds)
101
Configuration
error
GIM/Grid jumpers
incorrectly fitted.
Incorrect software
installed.
Ch
eck software version.
Check GIM/Grid jumpers are fitted correctly.
Emergency Shutdown,
Service Reset
301
Inner iron over-
temperature
Inner iron over-
temperature.
Open-circuit in
blocking chain.
Wait for thermostat to close, which may take
several minutes.
Spurious trip?
Visually inspect wiring connections.
Check continuity.
Switch connection to PCB:
J12:7 (REFERENCE)
J12:8 (SIGNAL)
Emergency Shutdown,
Automatic Reset
(10 seconds)
303
Dynamic absorber
over-travel
Dynamic absorber
over-travel.
Open-circuit in
blocking chain.
S
purious trip?
Visually inspect wiring connections.
Check continuity.
Switch connection to PCB:
J12:6 (REFERENCE)
J12:5 (SIGNAL)
Emergency Shutdown,
Service Reset
304
G83/ENS
protection
G83/ENS protection
tripped.
Open-circuit in
blocking chain.
Check status of Grid-Protection module (info in
manual).
Visually inspect wiring connections.
Check continuity.
Switch connection to PCB:
J12:1 (REFERENCE)
J12:2 (SIGNAL)
Emergency Shutdown,
Automatic Reset
(3 minutes)
306
Alternator
overload
Alternator overload.
Open-circuit in
blocking chain.
Visually inspect wiring connections.
Check continuity.
Switch connection to PCB:
J12:11 (REFERENCE)
J12:12 (SIGNAL)
Emergency Shutdown,
Service Reset
309
VI protection trip
VI protection trip.
Open-circuit in
blocking chain.
Trip generated by
power meter IC.
Blocking chain switch on
EC2 board
.
Possible PCB hardware fault.
Emergency Shutdown,
Automatic Reset
(3 minutes)