78
•
MN-35947
•
Rev 15
•
01/18
•
Combitherm® CT PROformance™ and CT Classic Series Installation Manual
Troubleshooting – Error Codes
Touch Motor Control Error Codes
The LEd is located on the variable frequency drive (VFd)
1
of the oven.
Type of Error
Indication
Release of Error
undervoltage
LED flashing sequence, with 1 flash per period.
Voltage of intermediate circuit is less than 250V
Overvoltage
LED flashing sequence, with 2 flashes per period.
Voltage of intermediate circuit exceeds 445V
Excess
Temperature
LED flashing sequence, with 3 flashes per period.
Temperature sensor in the power unit is more than 199°F
(93°C)
Current peak
LED flashing sequence, with 4 flashes per period.
Blocked motor, detected by current peak monitoring from
900 rpm rotating field
Overcurrent
LED flashing sequence, with 5 flashes per period.
Intermediate circuit current exceeds 4.0 A
Short-circuit
LED flashing sequence, with 6 flashes per period.
Release of interrupt at intermediate circuit current larger
than 53 A
power on
LED flashing sequence, with 7 flashes per period.
Eff ective mains voltage does not correspond to jumper set-
ting 115V/230V
Watchdog
LED flashing sequence, with 8 flashes per period.
Watchdog of the microcontroller released, program crash
1