58
FAULT MESSAGES IN CASE OF SHORT CIRCUIT OR SENSORS DISCONNECTION
10
B1
Heating branch temperature
HC heating shut-down
11
B2
Boiler outlet temperature
Boiler operation shut-down. The
protection against fuel fire penetration is
active. Primary pump is active.
12
B3
HW reservoir temperature
HW heating shut-down
13
B5
Feeder reservoir temperature
Boiler operation shut-down.
14
B9
Outside temperature
Boiler operation to the fixed temperature.
15
A6
Room device
Boiler heats to the latest desired
temperature.
6.4
Service board
1 – Circuit breaker (circuit breaker B16 1P)
2 – Two-button station (note: green and blue
backlighting)
3 – Cable gland ABB (thermoplastic)
4 – Safety thermostat signal lamp (orange)
5 – Dummy plug 28,0 (colour: white)
6 – Dummy plug 14,3 (colour: white)
A – Two-button station backlighting blue –
ventilator activation when making fire
B – Two-button station backlighting green –feeder
activation when making fire
Fig. no. 29
Service board
