Honeywell SV2 Series User Manual page 197

Fault Fault
Category Description
K2 internal relay
is stuck closed
POC Failure
Main
Elec-
tronics
MV1 MV1 signal fault MV1 (Main Valve 1) terminal
MV2 MV2 signal fault MV2 (Main Valve 2) terminal
SV2 Series Safety Shut-off Valves
V2F, V2V
Detailed Description
MV2 internal K2 relay is
stuck closed unexpectedly
Proof of Closure output
shorted to MV Input.
signal is not valid. Frequency
or duty is out of expected
range.
signal is not valid. Frequency
or duty is out of expected
range.
SV2 SERIES SAFETY SHUT-OFF VALVES USER MANUAL
Remediation Steps
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.
1.) Check for proper wiring between
valve and burner controller. Verify the
valve POC output terminal is not shorted
to an MV input terminal. Refer to the
installation instructions, 32-00018.
2.) If problem persists, replace the valve
main electronics board. Perform Valve
Production Cloning procedure first,
accessed via Setup & Tests menu.
3.) Reset valve and burner management
system, monitoring for proper operation
Remove power and shut-off gas supply as
necessary.
1.) Remove valve front electrical enclosure
and inspect MV1, L1 and N wiring
connections for wire engagement, seating,
pin engagement and cleanliness.
2.) Ensure MV1 is wired to proper
terminals on burner management system.
3.) Replace cover and restore power and
gas. Reset valve and burner management
system.
4.) If fault persists, repeat above steps
for L1 and N connections on the burner
management system.
5.) If fault persists, replace valve main
electronics.
Remove power and shut-off gas supply as
necessary.
1.) Remove valve front electrical enclosure
and inspect MV2, L1 and N wiring
connections for wire engagement, seating,
pin engagement and cleanliness.
2.) Ensure MV2 is wired to proper
terminals on burner management system.
3.) Replace cover and restore power and
gas. Reset valve and burner management
system.
4.) If fault persists, repeat above steps
for L1 and N connections on the burner
management system.
5.) If fault persists, replace valve main
electronics.
197
Comments Fault
#
69
90
11
12