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Troubleshooting
Touch Motor Control Error Codes
The LED is located on the variable frequency drive (VFD)
Type of Error
Undervoltage
LED flashing sequence, with 1 flash per period.
Overvoltage
LED flashing sequence, with 2 flashes per period.
Excess
LED flashing sequence, with 3 flashes per period.
Temperature
Current Peak
LED flashing sequence, with 4 flashes per period.
Overcurrent
LED flashing sequence, with 5 flashes per period.
Short-circuit
LED flashing sequence, with 6 flashes per period.
Power on
LED flashing sequence, with 7 flashes per period.
Watchdog
LED flashing sequence, with 8 flashes per period.
78
MN-35947
•
Indication
Rev 12
11/16
Combitherm® CT PROformance™ and CT Classic Series Installation Manual
•
•
•
of the appliance.
1
Voltage of intermediate circuit is less than 250V
Voltage of intermediate circuit exceeds 445V
Temperature sensor in the power unit is more than 199°F
(93°C)
Blocked motor, detected by current peak monitoring from
900 rpm rotating field
Intermediate circuit current exceeds 4.0 A
Release of interrupt at intermediate circuit current larger
than 53 A
E ective mains voltage does not correspond to jumper set-
ting 115V/230V
Watchdog of the microcontroller released, program crash
1
Release of Error
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