Page 71
N
EO
T
HERM
Boilers and Water Heaters
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.
92
Outlet sensor fault
H
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 (Domestic Hot Water) sensor
fault
H
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
H
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
H
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
H
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.
L
Internal Fault.
1. Reset module.
2. If fault repeats, replace module.
98
Internal Fault: Exceeded VSNSR
voltage tolerance
L
99
Internal Fault: Exceeded 28V
voltage tolerance
L
Code
Description
Lockout
or Hold
Procedure
Содержание NTH
Страница 4: ...LAARS Heating Systems...
Страница 13: ...Page 9 NEOTHERM Boilers and Water Heaters 38 1 2 98 8 3 4 22 7 1 2 19 64...
Страница 30: ...Page 26 LAARS Heating Systems Figure 21 Hydronic Piping Single Boiler Zoning with Circulators...
Страница 32: ...Page 28 LAARS Heating Systems Figure 23 Hydronic Piping Multiple Boilers Zoning with Circulators...
Страница 86: ...Page 82 LAARS Heating Systems Parts Illustration 1 Jacket Components...
Страница 88: ...Page 84 LAARS Heating Systems Parts Illustration 4 Internal Components Sizes 750 850...
Страница 90: ...Page 86 LAARS Heating Systems Parts Illustration 6 Gas Train Components Sizes 600 850...
Страница 91: ...Page 87 NEOTHERM Boilers and Water Heaters Parts Illustration 7 Heat Exchanger Components 68A Sizes 285...
Страница 92: ...Page 88 LAARS Heating Systems Parts Illustration 8 Electrical Components Front Battery CR2032 Touchscreen Back...
Страница 93: ...Page 89 NEOTHERM Boilers and Water Heaters Notes...
Страница 94: ...Page 90 LAARS Heating Systems Notes...
Страница 95: ...Page 91 NEOTHERM Boilers and Water Heaters Notes...
