Power interruption during Bath fill (Water will not flow when
power returns)
•
Turn off all hot water taps. Press ON/OFF twice.
03
Error Codes
•
Ensure Rinnai approved venting materials are being used.
•
Check that nothing is blocking the flue inlet or exhaust.
•
Check all vent components for proper connections.
•
Ensure vent length is within limits.
•
Ensure condensation collar was installed correctly.
•
Verify dip switches are set properly.
•
Check fan for blockage.
Air Supply or Exhaust Blockage
•
Check that the gas is turned on at the water heater and gas
meter. Check for obstructions in the flue outlet.
•
Ensure gas line, meter, and/or regulator is sized properly.
•
Ensure gas type and pressure is correct.
•
Bleed all air from gas lines.
•
Ensure proper Rinnai venting material was installed.
•
Ensure condensation collar was installed properly.
•
Ensure vent length is within limits.
•
Verify dip switches are set properly.
•
Ensure appliance is properly grounded.
•
Disconnect keypad.
•
Disconnect EZConnect or MSA controls to isolate the problem.
•
Check power supply for loose connections.
•
Check power supply for proper voltage and voltage drops.
•
Ensure flame rod wire is connected.
•
Check flame rod for carbon build-up.
•
Disconnect and re-connect all wiring harnesses on unit and PC
board.
•
Check all components for electrical short.
•
Check gas solenoid valves for open or short circuits.
•
Remove burner plate and inspect burner surface for
condensation or debris.
Flame Failure
•
Service Call
No burner operation during freeze protection mode
02
10
•
Check that the gas is turned on at the water heater, gas meter,
or cylinder.
•
Ensure gas type and pressure is correct.
•
Ensure gas line, meter, and/or regulator is sized properly.
•
Bleed all air from gas lines.
•
Verify dip switches are set properly.
•
Ensure appliance is properly grounded.
•
Disconnect EZConnect or MSA controls to isolate the problem.
•
Ensure igniter is operational.
•
Check igniter wiring harness for damage.
•
Check gas solenoid valves for open or short circuits.
•
Remove burner cover and ensure all burners are properly
seated.
•
Remove burner plate and inspect burner surface for
condensation or debris.
No Ignition
11
•
Check gas type of unit and ensure it matches gas type being
used.
•
Check for restrictions in air flow around unit and vent terminal.
•
Check for low water flow in a circulating system causing short-
cycling.
•
Ensure dip switches are set to the proper position.
•
Check for foreign materials in combustion chamber and/or
exhaust piping.
•
Check heat exchanger for cracks and/or separations.
•
Check heat exchanger surface for hot spots which indicate
blockage due to scale build up. Refer to instructions in manual
for flushing heat exchanger.
•
Measure resistance of safety circuit.
•
Ensure high fire and low fire manifold pressure is correct.
•
Check for improper conversion of product.
Thermal Fuse
14
•
Check for restrictions in air flow around unit and vent terminal.
•
Check for low water flow in a circulating system causing short-
cycling.
•
Check for foreign materials in combustion chamber and/or
exhaust piping.
•
Check for clogged heat exchanger.
Over Temperature Warning
16
•
Check sensor wiring for damage.
•
Measure resistance of sensor.
•
Clean sensor of scale build up.
•
Replace sensor.
Outgoing Water Temperature Sensor Fault
32
•
Check sensor wiring for damage.
•
Measure resistance of sensor.
•
Clean sensor of scale build up.
•
Replace sensor.
Heat Exchanger Outgoing Temperature Sensor Fault
33
•
Check for restrictions in air flow around unit and vent terminal.
•
Check sensor wiring for damage.
•
Measure resistance of sensor.
•
Clean sensor of scale build up.
•
Ensure fan blade is tight on motor shaft and is in good
condition.
•
Replace sensor.
Combustion Air Temperature Sensor Fault
34
•
Check modulating gas solenoid valve wiring harness for loose
or damage terminals.
•
Measure resistance of valve coil.
Modulating Solenoid Valve Signal Abnormal
52
•
Ensure fan will turn freely.
•
Check wiring harness to motor for damaged and/or loose
connections.
•
Measure resistance of motor winding.
Combustion Fan Failure
61
If blank screen is present on remote control then the flow control
has shorted out. Unplug flow control. If remote lights up and unit
starts operating then replace flow control assembly.
Water Flow Servo Faulty (does not stop flow properly)
65
•
Check wiring harness to all solenoids for damage and/or loose
connections.
•
Measure resistance of each solenoid valve coil.
SV0, SV1, SV2, and SV3 Solenoid Valve Circuit Fault
71
•
Ensure flame rod is touching flame when unit fires.
•
Check all wiring to flame rod for damage.
•
Remove flame rod and check for carbon build-up; clean with
sand paper.
•
Check inside burner chamber for any foreign material blocking
flame at flame rod.
•
Measure micro amp output of sensor circuit with flame present.
•
Replace flame rod.
Flame Sensing Device Fault
72
•
Flush heat exchanger. Refer to instructions in manual.
•
Replace heat exchanger.
Scale Build-up in Heat Exchanger (when checking
maintenance code history “00” is substituted for “LC”)
LC
•
Clean inlet water supply filter.
•
On new installations ensure hot and cold water lines are not
reversed.
•
Check for bleed over. Isolate unit from building by turning off
hot water line to building. Isolate the circulating system if
present. Open your pressure relief valve; if unit fires, there is
bleed over in your plumbing.
•
Ensure you have at least the minimum flow rate required to fire
unit.
•
Ensure turbine spins freely.
•
Measure the resistance of the water flow control sensor.
•
Remote control does not light up but you have 12 VDC at the
terminals for controls.
No Code (Nothing happens when water flow is activated.)
12
Wiring Diagram
Gas Pressure Setting
Remote Controller
Water
Inlet Max.
Gas Inlet
Min./Max
Forced Low
Table 1
Forced High
NAT.G
5"W.C.
/10.5"W.C.
8"W.C.
/13.5"W.C.
LPG
NAT.G
LPG
NAT.G
LPG
150 PSI
0.65"W.C. 0.80"W.C. 2.8"W.C. 3.8"W.C.
R98LSe
R98LSe-ASME
APPLIANCE OPERATING PRESSURES
U273-1364(00)
Dip Switches Settings
SW
NOTES
No.
2
3
Level 0
0-2000ft
(0-610m)
High Altitude
Level 1
2001-5200ft
(610-1585m)
Level 2
5201-7800ft
(1585-2377m)
Level 3
7801-10200ft
(2377-3109m)
Off
On
On
Off
On
On
Off
Off
Adjust switches 2 and 3 in the bank of 8 depending on
your altitude according to the table below.
The original PC boards on the water heaters do not
have the bank of 6 dip switches. Only spare PC
boards have this bank.
High Altitude
NAT.G
LPG
R98LSe
R98LSe-ASME
1
O
F
F
2
3
4
5
6
7
8
ON
O
F
F
ON
O
F
F
3
4
5
6
7
8
ON
O
F
F
ON
1
2
6
5
4
3
2
1
1
2
3
4
5
6
should read 5"W.C. - 10.5"W.C. on Natural Gas and 8"W.C. - 13.5"W.C.
WARNING
DO NOT adjust the other dip switches unless specifically instructed
to do so. Incorrect Dip Switch Settings can cause the Rinnai water
heater to operate in an unsafe condition and may damage the water
heater and void the warranty.
(Ensure gas pressure check under Commissioning has been completed
first !)
Check gas type using data plate on side of unit.
If using spare PC board, check gas type switches (Fig.1) are in the
correct position. (dip switch 1 of SW2 ‘ON’ = NG, ‘OFF’ = LPG)
See Dip Switch Settings section below.
Note: ‘ON’ towards right, ‘OFF’ towards left.
Set the Rinnai Water Heater to ‘Forced Low’ combustion by setting
No.7 dip switch of the (SW1) set of dip switches to ‘ON’. (Fig.3).
controller,
R98LSe(VA3237W)
R98LSe-ASME
070 00012 35237 4
A
3
1
W
3
1
B
1
2
O
F
F
Dip SW1
3
8
7
6
5
4
F
4
W
W
B
1
BK
BK
MIN
MAX
MODULATING VALVE
CURRENT ADJUSTING
Gas pressure
F
3
W
W
W
P
W
W
OUTGOING WATER
WATER THERMISTOR
HEAT EXCHANGER
WATER THERMISTOR
Y
BR O
R W
BR
R
O
Y
W
BK
R
W
for REU-EZC
(Optional)
1
13
WATER FLOW
SENSOR
BK
F
2
Y
R
R Y BK
QS
BY-PASS FLOW
CONTROL DEVICE
Y
BK
R
FREEZE PROTECTION
(OPTIONAL)
G
W
W
P
BL
R
BR
Y
GY
WATER FLOW
CONTROL DEVICE
R BL BR Y GY
G R
R
BL
BR
Y
COMBUSTION FAN
FM
R
BK
Y
W
E
1
W
4
1
Y
BK
R
1
1
MODULATING
SOLENOID VALVE
POV
H
2
O
O
H
7
Y
FLAME ROD
H
3
SV1
H
5
H
4
SV0
O
BK
SV2
BK
P
R
BK
MAIN SOLENOID VALVE
SOLENOID VALVE 1
(CENTER)
SOLENOID VALVE 2
(LEFT)
Y
Y
O
BK
O
O
(CN2)
R
P
W
12
1
SOLENOID VALVE 3
(RIGHT)
H
6
Y
BK
SV3
GY
C
1
IG
GY
GY
IGNITER
GND
GY
FUSE
(3A)
BK
W
AC120VAC120V
HOT
NEUTRAL
HOT
NEUTRAL
GROUND
GND
BK
REMOTE CONTROLLER
SPARK
ELECTRODE
5
4
Spare Parts Only
Gas type
1
2
3
O
F
F
Dip SW2
6
C
D
E
F
G
H
F
1
G
1
(CN3)
(CN4)
(CN1)
(CN12)
(CN5)
(CN7)
(CN9)
5
3
D
2
D
1
1
WB
K
WB
K
G/Y
SURGE
PROTECTOR
GND
R
W
RR
H
1
F
6
THERMAL FUSES
OVERHEAT
SWITCH
R
W
COLOR CODING
W :White
BK:Black
BR:Brown
R :Red
BL:Blue
Y :Yellow
P :Pink
O :Orange
G :Green
GY:Gray
BL
BL
W
W
W
W
W
W
ANTI-FROST
HEATER
D
5
D
3
FROST SENSING
SWITCH
W W
D
6
W
W
D
4
W
W W
W W
1
F
5
A
1
1
G/Y
Regulator adjustment
screw access plug
Burner
test point
SW1
SW2
High Pressure
Potentiometer
1
Spare Parts
Only
Troubleshooting
Outgoing Water Thermistor:
White - White
N / A
See example above F4
3 - 4
Heat Exchanger Temperature Thermistor:
Pink - White
N / A
See example above F3
3 - 11
Surge Protector:
Black - White
108 ~ 132 VAC
N / A
D2
1 - 3
Black - White
108 ~ 132 VAC
N / A
D1
1 - 3
Remote Controls:
Terminals B1
10 ~ 13 VDC
1.5 ~ 3.0 K ohms
B
1 - 3
(SV1, SV2, SV3 and POV) Gas valve and Modulating solenoids: (Set meter above 2K)
(Main) Pink - Black
Wire color
Voltage
Resistance
Connector #
Pin #'s
11 ~ 13 VDC
24 ~ 28 ohms
H3
6 - 7
(SV1) Black - Red
11 ~ 13 VDC
37 ~ 43 ohms
H4
5 - 6
(SV2) Black - Orange 11 ~ 13 VDC
37 ~ 43 ohms
H5
4 - 6
(M) Water Flow Control Device Servo or Geared Motor:
NOTE: The grey wire listed above turns to black at F connector on the PCB.
Set your meter to the hertz scale. Reading across the white and black wires at terminals 2 and 4
you should read between 60 and 420 hertz.
Grey - Brown
4 ~ 6 VDC
N / A
F5
5 - 7
Red - Blue
11 ~ 13 VDC
22 ~ 28 ohms
F5
9 - 10
(QS) Water Flow Sensor:
Black - Red
11 ~ 13 VDC
5.5 ~ 6.2 K ohms
F2
1 - 3
(IG) Ignition System:
Grey - Grey
90 ~ 110 VAC
N / A
C1
1 - 2
Yellow - Black
4 ~ 7 VDC
1 ~ 1.4 Mega ohms
F2
2 - 3
Thermal Fuse / Overheat Switch:
Red - White
11 ~ 13 VDC
Below 1 ohms
F6
F6 - H12
H1
Grey - Yellow
N / A
N / A
F5
5 - 8
(FM) Combustion Fan Motor:
White - Black
5 ~ 10 VDC
9.2 ~ 9.4 K ohms
E1
2 - 4
Red - Black
6 ~ 45 VDC
N / A
E1
1 - 2
Yellow - Black
11 ~ 13 VDC
3.5 ~ 3.9 K ohms
E1
2 - 3
By-pass Flow Control:
Orange - White
2 ~ 6 VDC
15 ~ 35 ohms
G1
2 - 5
Yellow - White
(Unit in operating mode)
G1
3 - 5
Brown - White
G1
1 - 5
Red-White - Ground
G1
4 - 5
(SV3) Black - Yellow
11 ~ 13 VDC
37 ~ 43 ohms
H6
3 - 6
(POV) Orange - Orange 2 ~ 15 VDC
67 ~ 81 ohms
H2
9 - 10
This unit has six frost protection heaters mounted at different points inside the unit, to protect
140
°
F = 2.2 ~ 2.7K
Ω
221
°
F = 0.6 ~ 0.8K
Ω
59
°
F = 11.4 ~ 14K
Ω
86
°
F = 6.4 ~ 7.8K
Ω
113
°
F = 3.6 ~ 4.5K
Ω
This unit has an inline (3) amp glass fuse. Remove the fuse and check continuity through it. If
Heat Exchanger and Outgoing Water Temperature Thermistors:
#3
Using a voltage meter set on the 200 ohm scale, you should have a resistance reading. The
heater located on the heat exchanger piping should have a resistance reading of 139 ~ 161
ohms and the one located in the water flow sensor valve has a resistance reading of 335 ~ 385
ohms. The one located in the outlet valve has a resistance reading of 335 ~ 385. Voltage
throughout this circuit should be 120 VAC.
