Rinnai REU-VR3237WG Service Manual Download

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To Suit Models:

Infinity 32

REU-V

3237W

HD 250e

REU-V

3237WC

Does NOT Suit any other Models

SERVICE MANUAL

Summary of Contents for REU-VR3237WG

Page 1: ...To Suit Models Infinity 32 REU VR3237WG HD 250e REU VRM3237WC Does NOT Suit any other Models SERVICE MANUAL...

Page 2: ...AI Global Rinnai New Zealand has been certified to ISO 9001 Quality Assurance by Telarc All Rinnai products are Certified to WaterMark by SAI Global WaterMark certification is awarded to products and...

Page 3: ...change specifications without notice Failure to comply with these instructions may result in serious personal injury or damage to the appliance This manual has been published by Rinnai Australia Engi...

Page 4: ...uit kcal h kilocalorie per hour kPa kilopascals LED light emitting diode L min Litres per minute mA milliamps MJ h megajoule per hour mm millimetres mmH2O millimetres of water gauge pressure OHS overh...

Page 5: ...ollers 5 Smartstart 7 Cutaway Diagram 8 Operational Flow Chart 9 Operation Principles 11 Main Components 12 Time Charts 13 Wiring Diagram 14 Diagnostics Points 15 Dip Switch Settings 16 Fault Finding...

Page 6: ...NOTE 95 C appliance must be factory converted by Rinnai Water flow control Water flow sensor Electronic water flow control device Maximum hot water capacity raised 25 C 32 L min Water pressure requir...

Page 7: ...k Situated on the heat exchanger electrical power supply is stopped if the temperature exceeds 129 C Water Pressure Relief Valve Safeguards the water circuit against excessive inlet pressure Opens at...

Page 8: ...full close P kPa 0 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 100 0 120 0 140 0 160 0 200 0 300 0 Q L min 0 0 6 1 8 5 10 5 12 2 13 6 14 9 16 1 17 1 18 3 19 6 21 0 22 9 24 0 24 0 24 0 REU VM3237W...

Page 9: ...tre 61 G Cold Water inlet from wall 99 H Cold Water inlet from centre 52 I Gas Connection from wall 61 J Gas Connection from centre 110 Gas Length from base 41 Cold Length from base 51 Hot Length from...

Page 10: ...Wireless Water Controllers Ensure transceiver module is mounted in the correct location as per wireless controller installation instructions Ensure 2 x AA batteries are in good working order and inst...

Page 11: ...uestion 2 Fig 5 Fig 6 Is the water heater marked to state it delivers water not exceeding 50 C IF YES No further action required IF NO You will need to program the kitchen controller to enable selecti...

Page 12: ...ot water outlets before any outlets are opened using the flow and return pipework principle This results in water savings and reduced waiting time for heated water delivery from the outlet when opened...

Page 13: ...Infinity REU VR3237WG HD250e REU VRM3237WC 8 Issue 1 19 05 09 Rinnai 6 Cutaway Diagram...

Page 14: ...Infinity REU V3237WG HD250e REU VM3237WC 9 Issue 1 19 05 09 Rinnai 7 Operational Flow Chart...

Page 15: ...Infinity REU V3237WG HD250e REU VM3237WC 10 Issue 1 19 05 09 Rinnai...

Page 16: ...ill automatically control operation of the internal components to achieve the programmed temperature When a high temperature rise is required the PCB may cause the Water Flow Servo to close partially...

Page 17: ...flow control is achieved through the use of servo driven water flow and bypass valves Both servo motors are controlled by the PCB The Water Flow Valve restricts the flow of water into the heat exchan...

Page 18: ...Infinity REU VR3237WG HD250e REU VRM3237WC 13 Issue 1 19 05 09 Rinnai 10 Time Charts Normal Combustion Sequence Error Sequence Ignition Flame Failure Pre Purge Defect Sequence...

Page 19: ...LATING SOLENOID VALVE POV P P Y FLAME ROD SV1 SV0 Bk SV2 Bk P B Bk MAIN SOLENOID VALVE SOLENOID VALVE 1 SOLENOID VALVE 2 SMALL SURGE PROTECTOR F 1 3 1 Br B Gr Y GND F 2 Br B GND FUSE 3A B Br AC240V 50...

Page 20: ...LSE MIN GND D1 B Br A1 COMBUSTION FAN 7 Y BODY EARTH AC5 150V OVER DC1 A AFTER IGNITION FLAME ROD E1 8 OFF2 0l MIN 20Hz BELOW 1200PULSE MIN G6 33 400Hz H1 Br W O W Y W R W DC12V OPERATING DC2 6V 15 35...

Page 21: ...Infinity REU VR3237WG HD250e REU VRM3237WC 16 Issue 1 19 05 09 Rinnai 13 Dip Switch Settings Contact Rinnai for Dipswitch settings...

Page 22: ...ing Table is used as illustrated below Fault Finding Table Describes possible faults and error codes page 18 Operational Flow Chart page 9 Diagnostic Points Table Summarises running and standby electr...

Page 23: ...e ignition Check modulating solenoid valve 61 Combustion fan rotation error Check combustion fan 65 Water flow control device error Water flow is not controlled Water temperature too low Check water f...

Page 24: ...Fan Rotation Sensor a Measure voltages between Black and Yellow of connector B1 Normal DC11 13V If normal proceed to b Faulty Replace PCB b Measure voltages between Black and White of connector B1 Nor...

Page 25: ...t Check Solenoid 1 if error indicator 11 is displayed a Disconnect Solenoid 1 connector and measure resistance between Red and Black Normal 37 43 If normal proceed to b Faulty Replace Solenoid 1 b Mea...

Page 26: ...valve circuit Faulty Replace PCB 4e Modulating Valve E2 Circuit a Disconnect Modulating Valve terminal measure resistance between pink terminals Normal 67 81 If normal proceed to b Faulty Replace Mod...

Page 27: ...ure if 72 is displayed again check the Hot water outlet thermistor If 72 is not displayed check current leakage from the Flame Rod b Measure voltage between body earth and Flame Rod terminal E1 Normal...

Page 28: ...white and red wires Normal 1 If not normal replace thermal fuse If normal replace PCB Note If thermal fuse or overheat switch were faulty a Check heater for damage b Confirm gas type and combustion di...

Page 29: ...low servo fully open Normal DC4 6V Faulty Replace Water Flow Servo with Water Flow Servo d Measure voltage between Yellow and Grey with relay connector G6 connected with no water flowing water flow se...

Page 30: ...cuit diagram diagnostic points for normal temperature versus resistant values 12 Surge Protector D1 and electric fuses a Check the electrical fuses between D3 and D2 Normal resistance across fuse 1 If...

Page 31: ...aulty Replace valve anti frost heater b Disconnect relay connector D6 and measure resistance between the yellow wires on the pipe frost heater at the frost heater side Normal 618 Faulty Replace valve...

Page 32: ...ble where the appliances are connected with a deluxe controller This will enable service personnel to locate the maintenance history and faulty components with the appliance in operation NB When the m...

Page 33: ...ater operation frequency Example 6 600 Operations 100 0 999 05 Hot water fan frequency Hz pulses sec 0 999 Note 1 06 Water control connection none 0 or 1 Note 2 Bathroom Controller Additional controll...

Page 34: ...isplay Error Memory History This feature will show the last 10 faults in sequence 1 Turn off at the ON OFF button This can be done during operation 2 Press the ON OFF button while holding the Water Te...

Page 35: ...G HD250e REU VRM3237WC 30 Issue 1 19 05 09 Rinnai 18 Gas Pressure Setting Procedure Refer separate Rinnai document behind front cover of appliance 19 Gas Conversion Procedure Refer separate document a...

Page 36: ...se depicted in this manual Item Page 1 Removal of the Front Panel 24 2 Removal of the PCB Unit 24 3 Removal of the Water Flow Sensor Servo and Bypass Servo 24 4 Removal of the Sparkers 25 5 Removal of...

Page 37: ...t a Remove the front panel Refer Item 1 b Remove two 2 PCB unit fixing screws and pull out forward 3 Removal of the Water Flow Sensor Servo and Bypass Servo a Remove the front panel Refer Item 1 b Rem...

Page 38: ...r Item 1 b Remove one 1 sparker screw unplug high tension leads from spark ignitors and take out the sparker 4 Removal of the Combustion Fan a Remove front panel Refer Item 1 b Remove three 3 combusti...

Page 39: ...Remove two 2 manifold and gas control screws and take out by hand e Remove damper 3 screws f Remove two 2 burner retaining screws then remove combustion chamber front panel 9 screws g Take out the bur...

Page 40: ...forward Handle O ring carefully e Remove the two 2 screws fixing the manifold and gas control f Remove four 4 heat exchanger unit screws g Remove connectors of the fan motor thermal fuse flame rod et...

Page 41: ...Infinity REU VR3237WG HD250e REU VRM3237WC 36 Issue 1 19 05 09 Rinnai Heat Exchanger Back d Remove one 1 screw of the bi metal overheat switch...

Page 42: ...000 1 1 1 104 BURNER ASSY NG 92092213 000 140 000 1 1 1 104 BURNER ASSY LP 92099932 000 160 000 1 1 1 105 DAMPER NG 92099934 140 775 000 1 1 1 105 DAMPER LP 92099936 140 788 000 1 1 1 107 BURNER CASE...

Page 43: ...ANTI FROST HEATER CLIP 537 215 000 1 1 1 712 HEATER WATER FLOW 92092262 235 369 000 1 1 1 714 FUSE THERMAL 92090175 290 1273000 1 1 1 715 THERMAL FUSE CLIP 553 055 000 9 9 9 716 THERMISTOR 1 92095030...

Page 44: ...2348 520 281 010 1 1 1 816 O RING THERMISTOR 92062249 520 209 010 2 2 2 817 O RING GAS MANIFOLD 92075126 580 202 000 1 1 1 818 O RING 90195165 520 300 010 2 2 2 821 SCREW 501 395 000 1 1 1 822 SCREW 5...

Page 45: ...Infinity REU VR3237WG HD250e REU VRM3237WC 40 Issue 1 19 05 09 Rinnai 22 Exploded Diagram REU V53237WG AK REU V5M3237WC 65 AK...

Page 46: ...Infinity REU VR3237WG HD250e REU VRM3237WC 41 Issue 1 19 05 09 Rinnai REU V53237WG AK REU V5M3237WC 65 AK...

Page 47: ...Infinity REU VR3237WG HD250e REU VRM3237WC 42 Issue 1 19 05 09 Rinnai REU V53237WG AK REU V5M3237WC 65 AK...

Page 48: ...Infinity REU VR3237WG HD250e REU VRM3237WC 43 Issue 1 19 05 09 Rinnai REU V53237WG AK REU V5M3237WC 65 AK...

Page 49: ...a local call Higher from mobile or public phones Hot Water Service Line Tel 1800 000 340 Australia Pty Ltd ABN 74 005 138 769 Internet www rinnai com au E mail enquiry rinnai com au Rinnai has a Serv...

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