Lockout - Rheem R95P Installation Instructions Manual

LOCKOUT

All lockout conditions can be cleared immediately provided
that the original fault causing the lockout is cleared and
power to the unit is cycled off and then back on again or
(soft lockout only) if a heat call is cycled off for greater than
2 seconds but less than 20 seconds.
The furnace control will not initiate a heat cycle during any
lockout condition. A call for compressor or continuous fan
will generally be responded to but control will display the
lockout error fault code instead of the "C" (for compressor)
or "F" (for Continuous fan).
FIVE-MINUTE LOCKOUT
A five minute "soft" lockout will be initiated if the low pres-
sure switch fails to close after 60 seconds of continuous in-
ducer operation at the beginning of a normal heat cycle
(pressure switch proving period). The seven-segment dis-
play will display the appropriate fault. Lockout will automat-
ically be reset after five minutes.
ONE-HOUR LOCKOUT
A one hour "soft" lock out will be initiated when:
- Flame has not been detected after four ignition trials.
- Flame has been lost for five times in one heat call.
- Undesired flame has been detected. The one-hour pe-
riod will commence after flame is no longer detected.
- Dead Blower has been detected (main limit circuit open
for more than 150 seconds)
- When voltage has unexpectedly been detected on the
gas valve circuit and voltage goes away when inducer is
shut off.
- If a Water Sensed condition is detected once during
heat call (heat cycle terminated in response to fault) and
then clears and then is detected again within 5 minutes
of the next heat attempt (same heat call).
The seven-segment display will alternately display "10"
and the code number for the fault causing the lockout.
Lockout will automatically be reset after one hour
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HARD LOCKOUT
Three conditions shall cause a hard lockout:
1. The control senses an unspecified internal fault. Fault
code "93" is set and displayed. This lockout condition
cannot be reset by cycling the heat call.
2. Voltage is detected unexpectedly on the gas valve con-
tacts (welded relay) and will not clear by cycling the in-
ducer. Fault code "93" is set and displayed. This
lockout condition cannot be reset by cycling the heat
call.
3. The furnace control will declare that the blower motor is
inoperable (dead) if the main limit control has been
open for more than 150 seconds. Gas heating is termi-
nated. However, the control continues to try to operate
heating for up to four attempts in case the blower motor
starts working again. If a dead blower has been de-
clared four times in one heat call, the furnace control
enters a hard-lockout. Fault code "61" is set and dis-
played. This lockout condition CAN be reset by cycling
the heat call.