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Appendix A3
M588-00-880 Issue E
Table A33 - Inverter warning codes
Inverter warnings
BIT
Fault code
combination
Name Description
5
8 Reserved Reserved
4 Reserved Reserved
2
LOWTW Condensation warning, indicates that the inverter
(water) temperature is lower than expected –
possible causes include inverter water valve stuck
open.
1
HIGHTW Indicates that the inverter temperature is higher
than expected – possible causes include no or low
cooling water flow, inverter water valve stuck closed
or water pipe to inverter blocked.
6
8HIGHTC
Controller temperature above upper limit /
Controller temperature sensor open circuit - check
water supply
4HIGHTS
Inverter heat-sink temperature above upper limit /
Inverter heat-sink temperature sensor open circuit -
check water supply
2HIGHTM
Motor temperature above upper limit / Motor
temperature sensor open circuit - check water supply
1 MISSING_PHASE
The loss of one of the three input phases has been
detected - check mains supply to drive or blown
fuses
7
8UTCREG
Upper controller temperature regulator active -
current limit reduced - check cooling
4UTSREG
Upper heat sink temperature regulator active -
current limit reduced - check cooling
2 Reserved Reserved
1LVREG
Lower voltage regulator active - check mains voltage
8
8LOWVCC
Internal power supply fault - contact Edwards
4LOWTC
Low controller temperature - contact Edwards
2LOWTS
Low heatsink temperature - contact Edwards
1CAN LOSS Reserved
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