Honeywell SV2 Series User Manual page 182

SV2 Series Safety Shut-off Valves
Fault Fault
Category Description
FARMOD
target (S2a) not
reached
Fuel/Air
FARMOD
EEPROM
communication
Detailed Description
The Fuel/Air Ratio redundant
gas pressure signal was not
within the control setpoint
window within the specified
time of 30 seconds.
This fault can occur
independently or in
combination with fault 34
Fuel/Air Module has separate
storage which is does not
respond to read request.
Storage contains module-
specific calibration data
essential for correct device
operation. This can be
caused by incorrect wiring or
Fuel/Air Module damage.
Remediation Steps
If this fault occurs directly after
commissioning:
1.) Recommission the 4 points of the
correction curve and/or add additional
points to the correction curve.
If the fault persists or if it occurs in
combination with fault 34 (FARMOD
target (S2b) not reached), it indicates
low gas supply pressure for the asked
capacity.
1.) Check gas supply pressure to
appliance.
2.) Check Fuel/Air Module signal
connections for proper engagement.
3.) Reset valve and burner management
system, monitoring for proper operation.
4.) If fault persists, replace Fuel/Air
Module.
5.) Accept new Fuel/Air Ratio Module on
the FARMOD tab in the Setup & Tests
menu of user interface.
6.) Recommission partially or fully as
desired.
7.) Reset valve and burner management
system, monitoring for proper operation.
If this fault occurs independently, the
Fuel/Air Module is corrupt:
1.) Replace Fuel/Air Module.
2.) Accept new Fuel/Air Module on the
FARMOD tab in the Setup & Tests menu.
3.) Recommission partially or fully as
desired.
4.) Reset valve and burner management
system, monitoring for proper operation.
If fault persists, replace valve and re-
commission.
1.) Check the electrical connection of main
and Fuel/Air modules.
2.) Reset the valve and the burner
management system.
3.) If fault persists replace Fuel/Air Ratio
module.
4.) Accept new Fuel/Air Ratio Module on
the FARMOD tab in the Setup & Tests
menu of user interface.
5.).Recommission partially or fully as
desired.
182
Comments Fault
#
Warning 38
indication
for SV2
Series
valve. This
condition
will likely
cause a
burner
controller
lockout.
39
32-00029—02