Blinking Fault Codes . . . (continued)
Code 5-2
*High Fire Sw .or Low Fire Sw .*
Either High Fire Switch or Low Fire
Switch failure .
a . Check wiring and correct any errors .
b . Reset and sequence the relay module .
c . Use manual motor potentiometer to drive
the motor open and closed . Verify at motor
switch that the end switches are operating
properly . Use RUN/TEST switch if manual
potentiometer is not available .
d . Reset and sequence the relay module .
e . If the fault persists, replace the relay
module .
Fault Code
System Failure
Code 5-3
*Man-Open Sw .; Start Sw . or
Control ON*
Man-Open Switch, Start Switch or Control
On in the wrong operational state .
a . Check wiring and correct any errors .
b . Make sure that the Manual Open Valve
Switch, Start Switch and Control are
operating properly .
c . Stat Switch held ON too long .
d . Reset and sequence the relay module .
e . Reset and sequence the relay module .
If the fault persists, replace the relay
module (RM7838A1014; RM7838B1013 or
RM7838C1004 only) .
Code 6-1
*Internal Faults*
Relay Module self-test failure .
a . Reset and sequence the relay module .
b . If fault reappears, remove power from
the device, reapply power, then reset and
sequence the relay module .
c . If the fault persists, replace the relay
module .
Code 6-2
*Internal Faults*
Relay Module Self-Test failure .
a . Reset and sequence the relay module .
b . If fault reappears, remove power from
the device, reapply power, then reset and
sequence the relay module .
c . If fault does not repeat on the next cycle,
check for electrical noise being copied into
the relay module through the external loads
or possibly an electrical grounding issue .
d . If the fault persists, replace the relay
module .
Fault Codes
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