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Rinnai Water Heater Service Manual

3

100000098 Rev B

General Information

Safety Definitions

This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and

others.

Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in minor or
moderate injury. It may also be used to alert against unsafe practices.

DANGER

CAUTION

WARNING

Recommended Tools

•

Volt/Ohm/Amp meter with test probes

•

Digital manometer or U tube type manometer with 14 inch water column (W.C.) scale, a hose and two 1/8 inch
taps

•

assorted wrenches including a 3/16 Allen wrench

•

assorted screw drivers

•

leak solution or leak detector

•

Teflon tape

Using this Manual

Repairs should be performed by a qualified service technician.

The following information can be referenced for additional information.

•

Operation and Installation Manual

•

Hot Water System Design Manual

•

Technical Sheets

•

Technical Bulletins

Technical Support

Technicians are available to assist in servicing issues. Contact Rinnai Technical Services at 1-800-621-9419.

WARNING

There are a number of live tests that are required when fault finding this product. Extreme care should be used at
all times to avoid contact with energized components inside the water heater. Before checking for resistance
readings disconnect the power source to the unit and isolate the item from the circuit (unplug it).

If any of the original wire as supplied with the appliance must
be replaced, it must be replaced with type 18 AWG wire or its
equivalent.

Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.

CAUTION

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Содержание C42e

Страница 1: ...HPi Some of the trade names for models were changed to indicate that their cartons included isolation valves and a pressure relief valve For service and repair purposes the table below shows the equivalent models R C42e R C53e 10 28 41 49 54 59 69 R70e R C85e PLUS 12 29 43 50 56 65 72 R C53i PLUS R C85i PLUS 12 30 43 51 56 65 76 R C98e ASME 14 31 45 52 56 67 80 R C98i ASME 14 31 45 52 56 67 82 V53...

Страница 2: ...Se VA R94LSi VA 43 44 R C98e ASME R C98i ASME R98LSe ASME R98LSi ASME 45 46 RC80HPe RC80HPi R75LSe VB R75LSi VB R94LSe VB R94LSi VB 47 RC98HPe RC98HPi 48 Fan R C42e R C53e V53e R63LSe 49 R70e R C85e PLUS R63LSe2 R75LSe R94LSe 50 R C53i PLUS R C85i PLUS R50LSi V53i R75LSi R94LSi 51 R C98e ASME R C98i ASME R98LSe ASME R98LSi ASME 52 RC80HPe RC80HPi RC98HPe RC98HPi 53 PC Board R C42e R C53e 54 V53e R...

Страница 3: ...w drivers leak solution or leak detector Teflon tape Using this Manual Repairs should be performed by a qualified service technician The following information can be referenced for additional information Operation and Installation Manual Hot Water System Design Manual Technical Sheets Technical Bulletins Technical Support Technicians are available to assist in servicing issues Contact Rinnai Techn...

Страница 4: ...UC ASME 237 000 19 000 9 8 37 98 185 ºF 37 85 ºC V Series Commercial Indoor Trade Name Model Max BTU Min BTU Max Flow 1 gal min liters min Temperature Range R42e REU V1616W 120 000 17 100 NG 17 800 LP 4 2 16 98 140 ºF 37 60 ºC R53e REU V2020W 150 000 19 000 NG 20 200 LP 5 3 20 98 140 ºF 37 60 ºC R70e REU V2526W 199 000 15 000 7 0 26 98 140 ºF 37 60 ºC R85e REU V2532W 199 000 15 000 8 5 32 98 140 º...

Страница 5: ...VA2535WD UC 199 000 15 000 9 4 35 R98LSe REU VA3237W US 237 000 19 000 9 8 37 R98LSeASME REU VA3237W ASME 237 000 19 000 9 8 37 98 140 ºF 37 60 ºC 3 VA Series LS Series Residential or Commercial Outdoor Trade Name Model Max BTU Min BTU Max Flow 1 gal min liters min Temperature Range R50LSi REU VA2019FFUD US 150 000 15 000 5 0 19 98 140 ºF 37 60 ºC 2 R75LSi REU VA2528FFUD US 199 000 15 000 7 5 28 R...

Страница 6: ...ax Flow 1 gal min liters min Temperature Range R75LSi RL75i REU VB2528FFUD US 180 000 9 900 NG 10 300 LPG 7 5 28 98 140 ºF 37 60 ºC 2 R94LSi RL94i REU VB2735FFUD US 199 000 NG 190 000 LPG 9 900 NG 10 300 LPG 9 4 35 98 140 ºF 37 60 ºC 3 VB Series LS Series Residential or Commercial Indoor Trade Name Model Max BTU Min BTU Max Flow 4 gal min liters min Temperature Range V53i RV53i REU VB2020FFU US 15...

Страница 7: ...d hold the button for 2 seconds and without releasing the button press the On Off button Models MC 91 and MCC 91 1 Water Flow Begins Water Flow Sensor sends pulses to the PC Board PC Board senses flow Firing Sequence begins when the flow exceeds the minimum activation flow rate 2 Firing Sequence PC Board monitors inlet outlet water temperature temperature set point and water flow rate Combustion f...

Страница 8: ...nnai venting material was installed For non condensing models 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 En...

Страница 9: ...tions If this is incorrect then replace the sensor harness Replace PC board 71 Solenoid Valve Circuit For non condensing check wiring harness to all solenoids for damage and or loose connections Measure resistance of each solenoid valve coil For condensing replace PC board 72 Flame Sensing Device Verify flame rod is touching flame when unit fires Check all wiring to flame rod Remove flame rod and ...

Страница 10: ... Red Blue 11 13 VDC 22 26 ohms B1 1 2 Gray Brown 4 6 VDC N A B1 6 3 Gray Yellow N A N A B1 6 5 Gray Orange 11 14 VDC N A B1 6 4 NOTE At the B connector on the PCB gray wire turns to black orange wire turns to red QS Water Flow Sensor Black Red 11 13 VDC 5 5 6 2 K ohms B3 3 1 Yellow Black 4 7 VDC 1 1 4 mega ohms B3 2 3 IG Ignition System Gray Gray 90 100 VAC N A F1 1 2 FM Combustion Fan Motor Red B...

Страница 11: ...e resistance Typical resistance values are 11 4 14 K ohm for 59 F 6 4 7 8 K ohm for 86 F 3 6 4 5 K ohm for 113 F 2 2 2 7 K ohm for 140 F 0 6 0 8 K ohm for 221 F Outgoing Water Thermistor White White see above B4 1 2 Heat Exchanger Temperature Thermistor White White see above B5 1 2 Surge Protector Blue Brown 108 132 VAC N A F4 1 2 Blue Brown 108 132 VAC N A F3 1 3 With the power off check the cont...

Страница 12: ... 6 3 Gray Yellow N A N A 6 5 Gray Orange 11 14 VDC N A 6 4 NOTE At the B connector on the PCB gray wire turns to black orange wire turns to red QS Water Flow Sensor Black Red 11 13 VDC 5 5 6 2 K ohms 1 3 Yellow Black 4 7 VDC 1 1 4 mega ohms 2 3 Bypass Flow Control only on R C85e R C85ePLUS R C85i R C85iPLUS Brown White 2 6 VDC unit in operating mode 15 35 K ohms G1 plug between bypass and PCB 1 5 ...

Страница 13: ...ce values are 11 4 14 K ohm for 59 F 6 4 7 8 K ohm for 86 F 3 6 4 5 K ohm for 113 F 2 2 2 7 K ohm for 140 F 0 6 0 8 K ohm for 221 F Outgoing Water Thermistor White White see above B4 outdoor models B5 indoor models 1 2 Heat Exchanger Temperature Thermistor White White see above B5 outdoor models B6 indoor models 1 2 Surge Protector Blue Brown 108 132 VAC N A F6 1 2 Blue Brown 108 132 VAC N A F7 1 ...

Страница 14: ...tion below 1 VDC Limiter On G6 pins 5 4 7 11 G 4 6 VDC Limiter Off NOTE At the G connector on the PCB gray wire turns to black QS Water Flow Sensor Black Red 11 13 VDC N A G3 pins 3 1 9 15 G Yellow Black 4 7 VDC N A G3 pins 2 3 11 15 G Bypass Flow Control Brown White 2 6 VDC unit in operating mode 15 35 K ohms H1 pins 1 5 1 H 9 G Orange White 3 H 9 G Yellow White 4 H 9 G Red White Ground 2 H 9 G N...

Страница 15: ...or bulb should increase the resistance Typical resistance values are 11 4 14 K ohm for 59 F 6 4 7 8 K ohm for 86 F 3 6 4 5 K ohm for 113 F 2 2 2 7 K ohm for 140 F 0 6 0 8 K ohm for 221 F Outgoing Water Thermistor White White see above G5 1 2 Heat Exchanger Temperature Thermistor White White see above G4 1 2 Surge Protector Black White 108 132 VAC N A D1 1 3 Black White 108 132 VAC N A D2 With the ...

Страница 16: ...lue 11 13 VDC 22 28 ohms E5 1 2 9 8 E Gray Brown 4 6 VDC N A E5 5 3 4 6 E Gray Yellow N A N A E5 5 4 4 7 E NOTE At the E connector on the PCB gray wire turns to black QS Water Flow Sensor Black Red 11 13 VDC 5 5 6 2 K ohms E2 3 1 Yellow Black 4 7 VDC 1 1 4 mega ohms E2 2 3 IG Ignition System Gray Gray 90 110 VAC N A B1 1 2 FM Combustion Fan Motor Red Black 6 45 VDC N A D1 1 2 White Black 5 10 VDC ...

Страница 17: ...hm for 59 F 6 4 7 8 K ohm for 86 F 3 6 4 5 K ohm for 113 F 2 2 2 7 K ohm for 140 F 0 6 0 8 K ohm for 221 F Outgoing Water Thermistor White White see above E4 1 2 Heat Exchanger Temperature Thermistor White White see above E3 1 2 Surge Protector Black White 108 132 VAC N A C2 1 3 Blue Brown 108 132 VAC N A C1 With the power off check the continuity through the surge protector Check by placing one m...

Страница 18: ...7 F Gray Yellow N A N A F7 5 4 5 8 F NOTE At the F connector on the PCB gray wire turns to black orange wire turns to red QS Water Flow Sensor Black Red 11 13 VDC 5 5 6 2 K ohms F2 1 3 Yellow Black 4 7 VDC 1 1 4 mega ohms F2 2 3 Bypass Flow Control only on R94LSe and R94LSi Brown White 2 6 VDC unit in operating mode 15 35 K ohms G1 1 5 Orange White 2 5 Yellow White 3 5 Red White Ground 4 5 IG Igni...

Страница 19: ...221 F Outgoing Water Thermistor White White see above F5 1 1 3 4 F Heat Exchanger Temperature Thermistor Pink White see above F4 1 1 3 11 F Orange White see above F3 1 1 3 12 F Surge Protector Black White 108 132 VAC N A D2 1 3 Blue Brown 108 132 VAC N A D1 1 3 With the power off check the continuity through the surge protector Check by placing one meter lead on the top pin 1 and bottom pin 3 Chec...

Страница 20: ...B8 Y FR OVER 1 µ A DURING OPERATION FLAME ROD 2 M1 R FR NOT ON V53i RV53i SURGE PROTECTOR C1 W Bk AC108 132V SURGE PROTECTOR C2 MAIN POWER CORD C3 ANTI FROST HEATER C4 W W 88 120 Ω W OUTDOOR MODELS 156 211 Ω FFU INDOOR MODELS IGNITOR D1 Gy Gy AC108 132V DURING IGNITION HEAT EXCHANGER TH E2 W W 15ºC 59ºF 11 4 14 0 kΩ 30ºC 86ºF 6 4 7 8 kΩ 45ºC 113ºF 3 6 4 5 kΩ 60ºC 140ºF 2 2 2 7 kΩ 105ºC 221ºF 0 6 0...

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