19
IS THE FAN
RUNNING?
BOILER
SHUTDOWN?
POWER
TO FAN?
NO
YES
YES
YES
NO
YES
NO
NO
NO
YES
1 - Check/replace different
pressure switch for pump
2 - Check/replace wiring
3 - Check/replace P.C.B. wire
4 - Check/replace power
supply PCB
5 - Check/replace control PCB
1 - Check/replace air
pressure switch/wiring
2 - Check whether reset
button in stuck
3 - Check/replace flame
detection electrode
1 - Check/replace
2 - Check/replace P.C.B.
wire
3 - Check/replace power
supply PCB
4 - Check/replace air
pressure switch
1 - Replace fan
1 - Reset the boiler
PUMP PROTECTION
ACTIVATED?
INTERNAL
P.C.B. PROTECTION
ACTIVATED?
B
C
FC001Ac
Summary of Contents for Genus 27 Plus
Page 46: ...403 Users Manual...