Installation / Operation Instruction Manual

Page 89
64 PII (Pre-Ignition Interlock) OFF H or L 1. Check wiring and correct any faults.
2. Check Preignition Interlock switches to
assure proper functioning.
3. Check the valve operation.
4. Reset and sequence the module; monitor
the PII status.
5. If code persists, replace the module.
67 ILK (Interlock) OFF H or L 1. Check wiring and correct any possible
shorts.
2. Check Interlock (ILK) switches to assure
proper function.
3. Verify voltage through the interlock string to
the interlock input with a voltmeter.
4. If steps 1-3 are correct and the fault persists,
replace the module.
68 ILK (Interlock) ON H or L
70 Wait for leakage test completion H 1. Internal Fault. Reset module.
2. If fault repeats, replace module.
78 Demand Lost in Run H 1. Check wiring and correct any possible
errors.
2. If previous steps are correct and fault
persists, replace the module.
79 Outlet high limit H or L 1. Check wiring and correct any possible
errors.
2. Replace the outlet high limit.
3. If previous steps are correct and fault
persists, replace the module.
80 DHW (Domestic Hot Water) high
limit
H or L 1. Check wiring and correct any possible
errors.
2. Replace the DHW high limit.
3. If previous steps are correct and fault
persists, replace the module.
81 Delta T limit H or L 1. Check inlet and outlet sensors and pump
circuits for proper operation.
2. Recheck the Delta T Limit to confi rm proper
setting.
3. If previous steps are correct and fault
persists, replace the module.
82 Stack limit H or L 1. Check wiring and correct any possible
errors.
2. Replace the Stack high limit.
3. If previous steps are correct and fault
persists, replace the module.
91 Inlet sensor fault H 1. Check wiring and correct any possible
errors.
2. Replace the Inlet sensor.
3. If previous steps are correct and fault
persists, replace the module.
Code Description Lockout
or Hold
Procedure
Brute HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS