Rheem Raypak AVIA 264 - Page 35

35
The following conditions are displayed only while there is a
demand for heat present.
Display Condition
Flame Lost Flame was not detected when heating.
Water Sw Open Water pressure switch open.
Vent Sw Open
Vent air switch open. Check for vent
obstructions.
Hi Limit 1 Fault
High-Temp. limit 1 open. Press MODE
key to remove lockout. Check water
ow.
Hi Limit 2 Fault
High-Temp. limit 2 open. Press MODE
key to remove lockout. Check water
ow.
Cabinet Temp Lm Cabinet Temp. limit open.
Air SW Open
Air pressure switch open. Check air
inlet obstruction.
Fan Lockout
3 air switch faults within same heat
demand cycle. Power must be cycled
to clear the fault.
Di󰀨 Sw Fault
Di󰀨erential Pressure switch failed
open. Check fan operation and main
power supply.
Ign Try Failure
Unit failed to ignite on rst or second
try. Check gas supply.
Ign 60 min Delay
Gas valve failed 3 times in single call-
for-heat. Unit is locked out for 60-min.
Ignition Lockout
When available, Single-try ignition
failed and Lockout. Power must be
cycled to clear the fault.
Flue Over Temp
Flue temperature was higher than
390°F (199°C). Power must be cycled
to clear the fault.
Remote Wire Err
While Remote mode is active, both
Spa and Pool inputs are energized.
Outlet Over Temp
Outlet Temp was higher than 180°F
(82.0°C). Check water ow.
Low Flow Fault
Low ow conditions are detected in the
heater. Possible scaling.
High Flow Fault
High ow conditions are detected in
the heater. Possible condensation.
Flue Low Temp
Flue temperature is below 175°F
(79.5°C). Warning: Possible
condensation.
Flue Extreme Low
Flue temperature is below 140°F (60
°C). Service required. Press MODE to
remove lockout.
Call Service
Fan Lockout, Ignition Lockout or Flue
Extreme Low Temperature occurred
3-times in 48-hours. Contact Service
support.
Table Q. Heater Status Messages - Demand for Heat
See Troubleshooting guides on pages 49 and 50
for diagnosis.
The following conditions are displayed in Pool, Spa and
Remote modes when there are active fault conditions.
Display Condition
No
Communication
With Ignition
Unable to communicate User
Interface with Ignition board. Check
P7 and harness wires.
In Sensor Fault
Water Inlet thermistor temperatures
disagree by more than 3°F (1.5°C).
In Sensor Open
Water Inlet thermistor sensor failed
open. Below 6°F (-14°C).
In Sensor Short
Water Inlet thermistor sensor failed
short. Above 188°F (86.5°C).
Out Sensor Open
Water Outlet thermistor sensor failed
open. Below 6°F (-14°C).
Out Sensor Short
Water Outlet thermistor sensor failed
short. Above 188°F (86.5°C).
Flue Sensor Open
Flue temp sensor failed open. Above
464° F (240°C).
Flue Sensor Shrt
Flue temp sensor failed short. Below
7.5°F (-13.5°C).
Flow Sensor Fail
When equipped, Flow sensor
readings are out of range (0 to 100
GPM).
Flame w/o CFH
Board is sensing ame when gas
valve is commanded shut.
Gas Valve Fault
Gas valve is sensed to be ON when
commanded OFF. 60-min. soft
lockout.
Pump Ctl Fail
When equipped, Protégé Pump
Control is enabled but not responding
to commands.
WChem Brd Fail
When equipped, Chemistry board
is enabled but not responding to
commands.
Di󰀨 Sw Closed
Control is sensing Di󰀨erential
pressure switch closed when Fan is
not commanded.
Di󰀨 Sw Open
Fan is commanded for 10-seconds
without di󰀨erential switch closing.
Internal Fault or
EEPROM Fault
Memory fault. Reset setpoints or
replace board if fault does not clear.
Clock/Fireman Sw
Time clock/reman switch circuit is
open.
Low Temp
Lockout
Water temperature is below 36°F
(2°C).
Low Voltage
Controller is receiving supply voltage
below 23 VAC.
Sensor Misplaced
Check inlet and outlet sensor
installation.
Table P. Heater Status Messages - Active Faults