38
BACnet / Boilers
Table 37. Lock and Hold Codes
Code
Description
Recommended Troubleshooting of Lockout Codes
70
Wait for leakage test completion
4. Internal Fault. Reset Module.
5. 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.
5HFKHFNWKH'HOWD7/LPLWWRFRQ¿UPSURSHUVHWWLQJ
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
'HOWD7H[FKDQJHURXWOHWOLPLW
84
'HOWD7LQOHWH[FKDQJHUOLPLW
85
,QOHWRXWOHWLQYHUVLRQOLPLW
86
,QOHWRXWOHWLQYHUVLRQOLPLW
87
,QOHWH[FKDQJHULQYHUVLRQOLPLW
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.
&KHFNWKDWÀDPHLVQRWSUHVHQWLQWKHFRPEXVWLRQFKDPEHU&RUUHFWDQ\HUURUV
2.
0DNHVXUHWKDWWKHÀDPHGHWHFWRULVZLUHGWRWKHFRUUHFWWHUPLQDO
3.
0DNHVXUHWKH) *ZLUHVDUHSURWHFWHGIURPVWUD\QRLVHSLFNXS
4.
5HVHWDQGVHTXHQFHWKHPRGXOHLIFRGHUHDSSHDUVUHSODFHWKHÀDPHGHWHF
-
tor.
5. Reset and sequence the module, if code reappears, replace the module.
Summary of Contents for 100316044
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