Er03Vulcan Hart
Vulcan Hart Er03 Error Code
Ambient sensor error - temp below 32°F
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Other Vulcan Hart Error Codes
Er01
ROM checksum error - internal ROM malfunction
Er02
RAM checksum error - internal RAM malfunction
Er04
Configuration error - microprocessor malfunction
Er05
EPROM error - power loss during data storage
Er06
Zone 1 A/D underflow error
Er07
Zone 1 A/D overflow error - open sensor
Er10
Stack overflow error - microprocessor malfunction
Er11
Open sensor error
Er12
Shorted sensor
PROB
Temperature probe failure or controller failure
HOT
Frypot temperature above 410°F
HELP
Heating problem / ignition lockout