Honeywell SV2 Series User Manual page 196

SV2 Series Safety Shut-off Valves
Fault Fault
Category Description
Reset button
fault
Solenoid
internal VAC
feedback
Analog to digital
test failure
PRESSMOD or
FARMOD power
supply fault
Main
Elec-
tronics
K1 internal relay
is stuck closed
Detailed Description
Reset button has been
pressed too long or is stuck.
Solenoid 1 and/or solenoid 2
internal feedback VAC signal
shorted as sensed by valve
main electronics.
The valve main electronics
low voltage supply or AD
(analog to digital) converter
has failed
There is a power supply fault
on the valve main electronics
assembly for the Pressure
Module and/or Fuel/Air Ratio
Module.
MV1 internal K1 relay is
stuck closed unexpectedly
Remediation Steps
1.) Attempt valve reset by depressing and
holding button for 2 seconds.
2.) If fault persists, replace valve main
electronics.
1.) Reset valve and burner management
system.
2.) If fault persists, replace valve main
electronics.
1.) Reset valve and burner management
system.
2.) If fault persists, replace valve main
electronics.
Remove power and shut-off gas supply
1.) Remove valve front electrical enclosure
and disconnect Pressure Module and
Fuel/Air Ratio Module connections, if
present.
2.) Restore power.
3.) Reset valve and burner management
system
4.) If fault persists, replace valve main
electronics.
5.) Reconnect Pressure Module (if
present) to valve main electronics.
6.) If fault persists, replace Pressure
Module.
7.) Reconnect Fuel/Air Ratio Module (if
present) to valve main electronics.
8.) If fault persists, replace Fuel/Air Ratio
Module.
9.) Accept new Fuel/Air Ratio Module on
the FARMOD tab in the Setup & Tests
menu of the user interface.
10.) Recommission partially or fully as
desired.
11.) Replace electrical enclosure cover,
restore power and gas supply and reset
valve and burner management system.
1.) Reset valve and attempt system restart.
2.) If fault persists, replace valve main
electronics board. Perform Valve
Production Cloning procedure first,
accessed via Setup & Tests menu.
196
Comments Fault
#
36
40
46
49
68
32-00029—02