Laars MAGNATHERM MGH2000 Installation And Operation Instructions For page 75

MagnaTherm Boilers and Water Heaters
code Description
26 internal fault:
Static flame ripple
27 internal fault:
Flame rod shorted to ground detected
28 internal fault:
A/D linearity test fails
29 internal fault:
Flame bias cannot be set in range
30 internal fault:
Flame bias shorted to adjacent pin
31 internal fault:
SLO electronics unknown error
32-46 internal fault:
Safety Key 0 through 14
47 Flame Rod to ground leakage
48 Static flame (not flickering)
49 24 VAc voltage low/high
50 Modulation fault
51 Pump fault
52 Motor tachometer fault
Lockout Procedure
or Hold
H internal fault
1. Reset module
2. if fault repeats, replace module.
H internal fault
1. Reset module
2. if fault repeats, replace module.
H internal fault
1. Reset module
2. if fault repeats, replace module.
H internal fault
1. Reset module
2. if fault repeats, replace module.
H internal fault
1. Reset module
2. if fault repeats, replace module.
H internal fault
1. Reset module
2. if fault repeats, replace module.
L internal fault
1. Reset module
2. if fault repeats, replace module.
H internal fault
1. Reset module
2. if fault repeats, replace module.
H internal fault
1. Reset module
2. if fault repeats, replace module.
H 1. check the module and display connections.
2. check the module power supply and make
sure that frequency, voltage and VA meet the
specifications.
H internal sub-system fault.
1. Review alert messages for possible trends.
2. correct possible problems.
H internal sub-system fault.
1. Review alert messages for possible trends.
2. correct possible problems.
H internal sub-system fault.
1. Review alert messages for possible trends.
2. correct possible problems.
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