Harsco Industrial MACH C1500GG Installation & Owner's Manual page 46

5.5.11 Auto-reset Error Codes – E##
Code ENVI™ Control Display
E01
OUT TEMP SENS OPEN
E02
IN TEMP SENS OPEN
E03
FLUE TMP SENS OPEN
E04 DHW TEMP SENS OPEN DHW Temperature Sensor Open
E05
HX TEMP SENS OPEN
OUT TEMP SENS
E11
SHORT
E12
IN TEMP SENS SHORT
E13 FLUE TMP SENS SHORT Flue Temperature Sensor Short
DHW TEMP SENS
E14
SHORT
E15
HX TEMP SENS SHORT
E16
HEADER SENS SHORT
E18
LINE NEUTRAL REV
E20
FALSE FLAME
E21
LOW FLOW / ILK
E22 NO GROUND 60 HZ ERR No Ground error
E23
LINE FREQUENCY ERR
E24
FAULTY GROUND
E30
HIGH FLUE TEMP
E32
HIGH INLET TEMP
E34
BLOCKED FLUE
E41 REVERSE FLOW IN OUT Reversed Water Flow
E42
INTERAL ERROR 48
E46
INTERAL ERROR 35
E47
INTERAL ERROR 36
E48
INTERAL ERROR 37
E49
RAPID RISE HX ERROR
E50
RAPID RISE ERROR
E51
INTERNAL ERROR 67
E52
WRONG BOILER TYPE
E 54
IF COMM FAILURE
Lockout
Outlet Temperature Sensor Open
Inlet Temperature Sensor Open
Flue Temperature Sensor Open
Heat Exchanger Temperature Sensor
Open
Outlet Temperature Sensor Short
Inlet Temperature Sensor Short
DHW Temperature Sensor Short
Heat Exchanger Temperature Sensor
Short
Header Temperature Sensor is
defective
Electrical Error
False Flame
Low Water Flow or Open Interlock
Circuit
Line Frequency Error
Faulty Ground
Flue Gas Temperature Too High
Inlet Temp Too High
Blocked Flue
Internal Error 48
Internal Error 35
Internal Error 36
Internal Error 37
Rapid Rise Heat Exchanger
Temperature
Rapid Rise Outlet Temp
Internal Error 67
Wrong Boiler Type
Interface Board Failure
Page 46
MACH® Gas-Fired Boiler
Description
Boiler outlet water temperature sensor open circuit
Boiler inlet water sensor temperature open circuit
Boiler flue gas temperature sensor open circuit
Domestic Hot Water temperature sensor open circuit
Heat Exchange temperature sensor open circuit
Boiler outlet water temperature sensor short circuit
Boiler inlet water temperature sensor short circuit
Boiler flue gas temperature sensor short circuit
Domestic Hot Water temperature sensor short circuit
Heat Exchange temperature sensor short circuit
Header temperature sensor on IF board has a short
circuit or an open circuit
Hot and Neutral are reversed
Flame detected when no flame should be present
E21 converts to A07 after 5 minutes
No ground connected or voltage on ground
Line frequency deviates from 60Hz by more than 2%
Ground/Earth connection is not functioning correctly
Temperature of the flue gas is greater than setpoint
+ differential
Inlet water is greater than 194°F
Hi exhaust back pressure switch is tripped due to
excess pressure in the flue/stack or excessive
negative cabinet pressure
The water flow through the boiler is reversed (Inlet
water is hotter than outlet water)
Call for service.
Call for service.
Call for service.
Call for service.
Temperature across heat exchanger is rising faster
than allowed
Temperature of the Outlet water is rising faster than
allowed
Call for Service
Control and Boiler do not match (control is
programmed for another type of Harsco boiler)
No communication with Interface Board