17
PRELIMARY CHECKS
MAKE SURE THAT:
IS
THE POWER
L.E.D.
ON?
POSTION
OF THE
SELECTOR
NO
NO
ESTAT E
D.H.W.
Only Mode
NO
NO
YES
YES
YES
YES
FUME DISCHARGE
FUME DISCHARGE TEST
TEST
HEA
HEATING AND
TING AND
D.H.M.
.H.M. MODE
MODE
HEA
HEATING
TING
ONL
ONLY MODE
Y MODE
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
1 - Check the fuses
2 - Check the power supply
cord, plug and outlet
3 - Check/replace the power
supply P.C.B.
Press the
On / Off Button
D.H.W. IS
BEING DRAWN?
D.H.W. IS
BEING DRAWN?
FOR BOILERS
WITH ELECTRONIC
ANTI-FROST DEVICE:
PROTECTION IS ACTIVATED
IF HEATING TEMP
IS < 5
°
C
FOR BOILERS
WITH ELECTRONIC
ANTI-FROST DEVICE:
PROTECTION IS ACTIVATED
IF HEATING TEMP
IS < 5
°
C
MUST
TIME CLOCK
AND/OR ROOM
THERMOSTAT
BE ACTIVATED?
A
1 - There is sufficient water in
the system
2 - The gas is turned on
3 - The electrical supply is
turned on
1 - Check/reset system
pressure
2 - Check/restore gas
supply
3 - Check/replace short-
circuited heating probe
4 - Check/replace siezed
pump
It is possible to detect and correct any defect by using the
standard fault finding diagrams described in this chapter
1.7 Fault finding guide (flow-chart)
2. FAULT FINDING
FC001Aa
Summary of Contents for Genus 27 Plus
Page 46: ...403 Users Manual...
