Table 26
Error/fault definitions
Error/fault
codes
Flue Gas
Circuit break in flue safety device (NTC)
t 6.
Short circuit in flue safety device (NTC)
t 6
Flue safety device (NTC) shuts system off because of flue gas leakage
t 2
Air Flow
APS open
E 4
APS closed
E 5
Temperatures
Over-temperature failure
E 3
Flow temperature too high
t 1
Circuit break in CH flow sensor (NTC)
t 3.
Short circuit in CH flow sensor (NTC)
t 3
Circuit break in DHW sensor (NTC)
t 5.
Short circuit in DHW sensor (NTC)
t 5
Short circuit in outside temperature sensor (NTC)
t 7
Flame Detection
No flame
E 1
False flame
E 2
Flame circuit error
d 1
Mains
Low voltage in CVBC
a 1
Water Pressure
Water pressure error
p 1
Gas Valve
Valve circuit error
y 1
Communication
Communication error
C 1
41
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