ICC Mirius, Installation Instructions Manual

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39
BACnet / Boilers
Table 37. Lock and Hold Codes
Code Description Recommended Troubleshooting of Lockout Codes
70 Wait for leakage test completion 1. Internal Fault. Reset Module.
2. If fault repeats, replace module.
71-77 RESERVED
78 Demand Lost in Run 1. Check wiring and correct any possible errors.
2. If previous steps are correct and fault persists, replace the module.
79 Outlet high limit 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 high limit 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 1. Check Inlet and Outlet sensors and pump circuits for proper operation.
2. Recheck the Delta T Limit to confirm proper setting.
3. If previous steps are correct and fault persists, replace the module.
82 Stack limit 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.
83 Delta T exchanger/outlet limit
84 Delta T inlet/exchanger limit
85 Inlet/outlet inversion limit
86 Inlet/outlet inversion limit
87 Inlet/exchanger inversion limit
88 Outlet T-rise limit
89 Exchanger T-rise limit
90 Heat exchanger high limit
Sensor Faults
91 Inlet sensor fault 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.
92 Outlet sensor fault 1. Check wiring and correct any possible errors.
2. Replace the Outlet sensor.
3. If previous steps are correct and fault persists, replace the module.
93 DHW sensor fault 1. Check wiring and correct any possible errors.
2. Replace the DHW sensor.
3. If previous steps are correct and fault persists, replace the module.
94 Header sensor fault 1. Check wiring and correct any possible errors.
2. Replace the Header sensor.
3. If previous steps are correct and fault persists, replace the module.
95 Stack sensor fault 1. Check wiring and correct any possible errors.
2. Replace the Stack sensor.
3. If previous steps are correct and fault persists, replace the module.
96 Outdoor sensor fault 1. Check wiring and correct any possible errors.
2. Replace the Outdoor sensor.
3. If previous steps are correct and fault persists, replace the module.
97 Internal Fault: A2D mismatch. Internal Fault.
1. Reset Module.
2. If fault repeats, replace module.
98 Internal Fault: Exceeded VSNSR voltage
99 Internal Fault: Exceeded 28V voltage tolerance
100 Pressure Sensor Fault 1. Verify the Pressure Sensor is a 4-20ma source.
2. Check wiring and correct any possible errors.
3. Test Pressure Sensor for correct operation.
4. Replace the Pressure sensor.
5. If previous steps are correct and fault persists, replace the module.
101-104 RESERVED
Flame Operation Faults
105 Flame detected out of sequence 1. Check that flame is not present in the combustion chamber. Correct any errors.
2. Make sure that the flame detector is wired to the correct terminal.
3. Make sure the F & G wires are protected from stray noise pickup.
4. Reset and sequence the module, if code reappears, replace the flame detec -
tor.
5. Reset and sequence the module, if code reappears, replace the module.