Rinnai R98LSe-ASME Manual

Remote Controller

Gas Pressure Setting
APPLIANCE OPERATING PRESSURES
Table 1
Gas Inlet
Forced Low Forced High
Water
Min./Max
Inlet Max.
NAT.G LPG NAT.G LPG NAT.G
R98LSe
5"W.C. 8"W.C.
150 PSI 0.65"W.C. 0.80"W.C. 2.8"W.C. 3.8"W.C.
/10.5"W.C. /13.5"W.C.
R98LSe-ASME
should read 5"W.C. - 10.5"W.C. on Natural Gas and 8"W.C. - 13.5"W.C.

Troubleshooting

(SV1, SV2, SV3 and POV) Gas valve and Modulating solenoids: (Set meter above 2K)
Wire color Voltage Resistance Connector #
(Main) Pink - Black 11 ~ 13 VDC 24 ~ 28 ohms H3
(SV1) Black - Red 11 ~ 13 VDC 37 ~ 43 ohms H4
(SV2) Black - Orange 11 ~ 13 VDC 37 ~ 43 ohms H5
(SV3) Black - Yellow 11 ~ 13 VDC 37 ~ 43 ohms H6
(POV) Orange - Orange 2 ~ 15 VDC 67 ~ 81 ohms H2
(M) Water Flow Control Device Servo or Geared Motor:
Red - Blue 11 ~ 13 VDC 22 ~ 28 ohms F5
Grey - Brown 4 ~ 6 VDC N / A F5
Grey - Yellow N / A N / A F5
NOTE: The grey wire listed above turns to black at F connector on the PCB.
(QS) Water Flow Sensor:
Black - Red 11 ~ 13 VDC 5.5 ~ 6.2 K ohms F2
Yellow - Black 4 ~ 7 VDC 1 ~ 1.4 Mega ohms F2
By-pass Flow Control:
Brown - White G1
Orange - White 2 ~ 6 VDC G1
15 ~ 35 ohms
Yellow - White (Unit in operating mode) G1
Red-White - Ground G1
(IG) Ignition System:
Grey - Grey 90 ~ 110 VAC N / A C1
(FM) Combustion Fan Motor:
Red - Black 6 ~ 45 VDC N / A E1
White - Black 5 ~ 10 VDC 9.2 ~ 9.4 K ohms E1
Yellow - Black 11 ~ 13 VDC 3.5 ~ 3.9 K ohms E1
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.
Thermal Fuse / Overheat Switch:
F6
Red - White 11 ~ 13 VDC Below 1 ohms
H1
Dip Switches Settings
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
SW
No.
Level 0
2 Off
High Altitude 0-2000ft
3 Off
(0-610m)
(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).
High Pressure
Potentiometer
Burner
test point
SW1
1
SW2
Spare Parts
Only
LPG
Heat Exchanger and Outgoing Water Temperature Thermistors:
Pin #'s
59°F = 11.4 ~ 14KΩ 140°F = 2.2 ~ 2.7KΩ
6 - 7
86°F = 6.4 ~ 7.8KΩ 221°F = 0.6 ~ 0.8KΩ
5 - 6
113°F = 3.6 ~ 4.5KΩ
4 - 6
3 - 6
Outgoing Water Thermistor:
9 - 10
White - White N / A See example above F4
Heat Exchanger Temperature Thermistor:
9 - 10
Pink - White N / A See example above F3
5 - 7
Surge Protector:
5 - 8
Black - White 108 ~ 132 VAC N / A
Black - White 108 ~ 132 VAC N / A
1 - 3
#3
2 - 3
1 - 5 Remote Controls:
2 - 5
Terminals B1 10 ~ 13 VDC 1.5 ~ 3.0 K ohms
3 - 5
4 - 5
This unit has six frost protection heaters mounted at different points inside the unit, to protect
1 - 2
Using a voltage meter set on the 200 ohm scale, you should have a resistance reading. The
1 - 2 heater located on the heat exchanger piping should have a resistance reading of 139 ~ 161
2 - 4 ohms and the one located in the water flow sensor valve has a resistance reading of 335 ~ 385
2 - 3
ohms. The one located in the outlet valve has a resistance reading of 335 ~ 385. Voltage
throughout this circuit should be 120 VAC.
This unit has an inline (3) amp glass fuse. Remove the fuse and check continuity through it. If
F6 - H12
R98LSe
R98LSe-ASME
LPG NAT.G
ON ON
O O
1 1
F 2 F 2
3 3
F F
4 4
5 5
6 6
7 7
8 8
ON ON
O 1 O 1
F 2 F 2
3 3
F F
4 4
5 5
6 6
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.
NOTES
Level 1 Level 2
Off On On
2001-5200ft 5201-7800ft
On Off On
(610-1585m) (1585-2377m)
No burner operation during freeze protection mode
02
•
Service Call
03 Power interruption during Bath fill (Water will not flow when
power returns)
•
Turn off all hot water taps. Press ON/OFF twice.
10 Air Supply or Exhaust Blockage
•
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.
11 No Ignition
•
Check that the gas is turned on at the water heater, gas meter,
controller,
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.
12 Flame Failure
• 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.
Thermal Fuse
14
Regulator adjustment
screw access plug • 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.
3 - 4
3 - 11
D2 1 - 3
D1 1 - 3
B 1 - 3
Level 3
7801-10200ft
(2377-3109m)

Error Codes

16 Over Temperature Warning
•
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.
Outgoing Water Temperature Sensor Fault
32
• Check sensor wiring for damage.
• Measure resistance of sensor.
•
Clean sensor of scale build up.
•
Replace sensor.
33 Heat Exchanger Outgoing Temperature Sensor Fault
•
Check sensor wiring for damage.
•
Measure resistance of sensor.
• Clean sensor of scale build up.
• Replace sensor.
Combustion Air Temperature Sensor Fault
34
• 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.
52 Modulating Solenoid Valve Signal Abnormal
•
Check modulating gas solenoid valve wiring harness for loose
or damage terminals.
• Measure resistance of valve coil.
61 Combustion Fan Failure
• Ensure fan will turn freely.
•
Check wiring harness to motor for damaged and/or loose
connections.
•
Measure resistance of motor winding.
Water Flow Servo Faulty (does not stop flow properly)
65
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.
71 SV0, SV1, SV2, and SV3 Solenoid Valve Circuit Fault
• Check wiring harness to all solenoids for damage and/or loose
connections.
• Measure resistance of each solenoid valve coil.
Flame Sensing Device Fault
72
• 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.
LC Scale Build-up in Heat Exchanger (when checking
maintenance code history "00" is substituted for "LC")
•
Flush heat exchanger. Refer to instructions in manual.
•
Replace heat exchanger.
No Code (Nothing happens when water flow is activated.)
•
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.

Wiring Diagram

070 00012 35237 4
R98LSe(VA3237W)
R98LSe-ASME
U273-1364(00)