Laars MAGNATHERM MGH2000 Installation And Operation Instructions For page 82

Page 78
code Description
164 Block intake On
165 Block intake OFF
172 Main relay feedback incorrect
174 Safety relay feedback incorrect
175 Safety relay open
176 Main relay On at safe start check
178 Safety relay On at safe start check
184 invalid BLOwER/ HSi output setting
185 invalid Delta T limit enable setting
186 invalid Delta T limit response setting
LAARS Heating Systems
Lockout Procedure
or Hold
L 1. check wiring and correct any errors.
2. inspect the Block intake Switch to make sure it
is working correctly.
3. Reset and sequence the module.
4. During Standby and Purge, measure the
voltage across the switch. Supply voltage should
be present. if not, the Block intake Switch is
defective and needs replacing.
5. if the fault persists, replace the relay module.
L 1. check wiring and correct any errors.
2. inspect the Block intake Switch to make sure it
is working correctly.
3. Reset and sequence the module.
4. During Standby and Purge, measure the
voltage across the switch. Supply voltage should
be present. if not, the Block intake Switch is
defective and needs replacing.
5. if the fault persists, replace the relay module.
L internal Fault.
1. Reset module.
2. if fault repeats, replace module.
L internal Fault.
1. Reset module.
2. if fault repeats, replace module.
L internal Fault.
1. Reset module.
2. if fault repeats, replace module.
L internal Fault.
1. Reset Module.
2. if fault repeats, replace module.
L internal Fault.
1. Reset module.
2. if fault repeats, replace module.
L 1. Return to Configuration mode and recheck
selected parameters, reverify and reset module.
2. if fault repeats, verify electrical grounding.
3. if fault repeats, replace module.
L 1. Return to Configuration mode and recheck
selected parameters, reverify and reset module.
2. if fault repeats, verify electrical grounding.
3. if fault repeats, replace module.
L 1. Return to Configuration mode and recheck
selected parameters, reverify and reset module.
2. if fault repeats, verify electrical grounding.
3. if fault repeats, replace module.