72
RT-SVP011A-EN
Troubleshooting
Heat Control
Board Failure
Manf X
Heat Control
Board Failure
Manf X
Control Board
Failure Manf X
Heat
Warning
Non-Latching All
Gas heat control detects an internal failure. All burners on
the manifold are unavailable until the condition is
corrected.
Possible causes: Temporary issue, such as noise. Other
issues which require a board replacement.
Mod Gas control boards:
Verify 24 VAC signal input. Will allow another retry 10-
30 seconds after the error condition is created, and the
error condition is cleared.
Staged Gas Control Boards:
Verify gas valve relays, safety relays, etc. Will allow
another retry 10 minutes after the error condition is
created, and the error condition is cleared.
Remote
Heat Supply Air
Flow Proving
Manf X
Heat Supply Air
Flow Proving
Manf X
Supply Air
Proving Manf X
Heat
Warning
Non-Latching All
For the first or second consecutive occurrence, the Air
Flow Proving switch is open while a Firing Rate Demand
is requested. For modulating gas, this corresponds to the
R/W enable switch. For staged gas, this corresponds to
the W1 switch. All burners on the manifold are
unavailable. This could be open on the board connector.
Will allow another call for heat once the proving switch is
closed.
Remote
Heat Supply Air
Flow Proving
Lockout Manf X
Heat Supply Air
Flow Proving
Lockout Manf X
Supply Air
Lockout Manf X
Heat
Warning
Latching
All
For the third consecutive occurrence, the Air Flow Proving
switch is open while a Firing Rate Demand is requested.
For modulating gas, this corresponds to the R/W enable
switch. For staged gas, this corresponds to the W1 switch.
All burners on the manifold are unavailable. This could be
open on the board connector. Will allow another call for
heat once the diagnostic has been manually reset.
Remote
Heat Inducer Low
Press Manf X
Heat Inducer Low
Press Manf X
Inducer Low
Press Manf X
Heat
Warning
Non-Latching All
Staged Gas Heat control boards only.
Low air pressure switch is closed when inducer is off, or
low air pressure switch is open when it is expected to be
closed. All burners on the manifold are unavailable until
the condition is corrected. Will allow another retry 10
minutes after the error condition is created, and the error
condition is cleared.
Possible causes: Improper inducer wiring. Air pressure
switch failure. Faulty air pressure wiring or hose
connections.
Remote
Heat Inducer
High Press Manf X
Heat Inducer
High Press Manf X
Inducer High
Press Manf X
Heat
Warning
Non-Latching All
Staged Gas Heat control boards only.
High air pressure switch is closed when inducer is off, or
high air pressure switch is open when it is expected to be
closed. All burners on the manifold are unavailable until
the condition is corrected. Will allow another retry 10
minutes after the error condition is created, and the error
condition is cleared.
Possible causes: Faulty air pressure wiring or hose
connections. Faulty inducer connections. Improper air
inlet and outlet conditions. Faulty air pressure switch.
Remote
Heat Gas Valve
Short Manf X
Burner Y
Heat Gas Valve
Short Manf X
Burner Y
Gas Valve Manf X
Burner Y
Heat
Warning
Non-Latching All
Staged Gas Heat control boards only.
The burner gas valve is shorted to 24VAC. All burners on
the manifold are unavailable until the condition is
corrected. Will allow another retry 10 minutes after the
error condition is created, and the error condition is
cleared.
Possible causes: Control needs to be replaced. Faulty
wiring.
Remote
Diagnostic Name
and Source
Affects
Target
Severity
Persistence
Active
Modes
[Inactive
Modes]
Criteria
Reset
Level
