Alto-Shaam COMBITHERM CTC Series Operation, Maintenance, Troubleshooting, Wiring Diagrams page 60

Error Codes
Error Codes
Error Error Call Out in Display
Code
E220
Lower VFD Under Voltage
E221
Lower VFD Over Voltage
E222
Lower VFD Overheating
E223
Lower Motor Over Current
E224
Lower VFD Current Peak
E225
Lower VFD EEPROM Error
E226
Lower VFD Over Current
E227 Lower VFD Short Circuit
E228
Lower VFD Voltage Error
E289
Unknown Error from VFD
E290
Unknown Error from Lower VFD
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Description of Error
Lower VFD has detected an
under-voltage situation.
Lower VFD has detected an over-
voltage situation.
Lower VFD has detected an
overheat situation.
Lower Motor over current
detected.
Lower VFD current peak
detected.
Lower VFD EEPROM Error
detected.
Lower VFD over current detected.
Lower VFD short circuit detected.
Lower VFD voltage does not
correspond to jumper settings.
VFD has provided an unknown
error.
Lower VFD has provided an
unknown error.
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Possible Cause(s)
— Possible Lower VFD failure.
— Possible Lower VFD failure.
— Unit has experienced an over heat condition.
— Defective high limit switch.
— Defective cooling fans.
— Possible Lower VFD failure.
— Possible Lower VFD failure.
— Possible Lower VFD failure.
— Possible Lower VFD failure.
— Possible Lower VFD failure.
— Possible Lower VFD failure.
— Lower VFD voltage jumper is not correct.
— Possible Lower VFD failure.
— Possible VFD failure.
— Possible Lower VFD failure.
• T e c h n i c a l S e r v i c e M a n u a l