Combustion Air Blockage; Temperature Probe Fault - Rheem HE119-130LP Use And Care Manual

ECO/VENT
24
LINE
SWITCH
VAC
K1
COMB
BLOWER
K5
IGNITER
ELEMENT
CONTROL
HEALTH
ECO/VENT
24
LINE
SWITCH
VAC
K1
COMB
BLOWER
K5
IGNITER
ELEMENT
CONTROL
HEALTH
ECO/VENT
24
LINE
SWITCH
VAC
K1
COMB
BLOWER
K5
IGNITER
ELEMENT
CONTROL
HEALTH
K3 K4
PRESSURE
GAS
GAS
SWITCH
VALVE
VALVE
RLY 2
RLY 1
GAS
VALVE
K1
K5
CONTROL
K3
ELECTRONICS
K4
WATER
TEMPERATURE
K3 K4
PRESSURE
GAS
GAS
SWITCH
VALVE
VALVE
RLY 2
RLY 1
GAS
VALVE
K1
K5
CONTROL
K3
ELECTRONICS
K4
WATER
TEMPERATURE
K3 K4
PRESSURE
GAS
GAS
SWITCH
VALVE
VALVE
RLY 2
RLY 1
GAS
VALVE
K1
K5
CONTROL
K3
ELECTRONICS
K4
WATER
TEMPERATURE
CONTROL HEALTH
Control Health LED Flashing
POSSIBLE CAUSE
This indicates that the main
control board has failed one or
more of its internal diagnostic
self-tests.

COMBUSTION AIR BLOCKAGE

Pressure Switch LED Flashing
POSSIBLE CAUSE
1. Combustion air blockage.
2. Blower not operating:
a. Blower wiring
b. Blower motor
3. Defective air switch
4. One of the gas valve wires-
may be disconnected dur-
ing ignition sequence.
5. Poly hose between the
blower and air pressure
switch is blocked or discon-
nected.

TEMPERATURE PROBE FAULT

Water Temp LED Flashing
POSSIBLE CAUSE
1. Temp probe wiring open.
2. Defective probe.
3. No water in tank or tank in
freezing conditions.
4. Water level in tank is too low
- probe in steam.
5. Probe wiring shorted.
NOTE:
If the temperature probe housing fractures and allows water into
the sensor section of the probe, this may affect the temperature
display on the display pnael. If the display is showing highly
inconsistent temperature readings, this is an indication the
temperature probe is defective due to water contamination.
Replace probe.
20
REMEDY
Press red reset button on the
display board to reset the con-
trol. If this error occurs repeat-
edly, replace the main control
board.
REMEDY
1. Check intake and exhaust
piping for obstructions.
2a. Repair wiring.
2b. Replace blower motor.
3. Replace air switch.
4. Check wires to Gas valve.
Reseat wires into harness.
5. Remove or correct block-
age connect hose to blow-
er or air pressure switch.
REMEDY
1. Repair wiring.
2. Replace probe.
3. Control is recording an "out
of bounds" condition. Turn on
water supply; remove tank
from freezing conditions.
4. Control is recording an "out
of bounds" condition. Fill
tank.
5. Replace probe.