Rheem 862 27 Series Service Instructions Manual
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Rheem 862 27 Series Service Instructions Manual

27 litre external/internal electronic gas continuous flow water heater
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Rheem Australia Pty Ltd
Electronic Gas Continuous Flow Water Heater
This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed "uncontrolled".
27 Litre External/Internal
Solahart
Edwards
10143272
362027
10143273
372027
10143274
374X27
10143275
ABN 21 098 823 511
TM049
First Issued: Dec 09
Revision: AL
Issued: April 2019
Everhot
Vulcan
274X27
244X27
276X27
Rheem
862X27
864X27
866X27
872X27
874X27
876X27

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Summary of Contents for Rheem 862 27 Series

  • Page 1 Issued: April 2019 Solahart Edwards Everhot Vulcan Rheem 10143272 362027 274X27 244X27 862X27 10143273 372027 276X27 864X27 10143274 374X27 866X27 10143275 872X27 874X27 876X27 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 2: Table Of Contents

    Error Code 29 ......................... 53 Error Code 31, 32, 33 & 34 .................... 54 TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 3 FLUING REQUIREMENTS FOR INTERNAL MODELS ............. 79 DOCUMENT REVISION HISTORY ................... 83 TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 4: Introduction

    TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 5: Touch Voltage Testing

     If the earth path of the appliance is intact, the problem is with the household wiring. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 6: In-Service Testing

    10. Plug 3 pin plug back into power point and switch on power point. Note: If continuing with any diagnostic procedures do not perform this step. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 7: Water Heater Model Identification

    The model number, serial number and date of manufacture should be quoted in all correspondence. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 8 6 Star Edwards Gas CF 82ºC 27L/M Nat/Pro Int 362027NF / PF TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 9: Specifications

    6 star model (4th digit of model number is 6, eg: 874627NF) TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 10: Wiring Diagram

    A wiring diagram is also located on the inside of the front cover panel. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 11: Product Changes

    Wi-Fi network or a compatible mobile device are not available. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 12 20-51136-00 or PCB, part number 41-02890-00 as required for service replacements. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 13 (refer to page 27 for more information). TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 14: Preset Temperature Adjustment

     The preset outlet temperature setting of this water heater must be set at 48°C prior to the commencement of this procedure. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 15 18. Switch on the electrical supply at the power outlet to the water heater. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 16: Sequence Of Operation

    7. Once the post-purge operation is completed power to the Fan Motor (24) is cut and the Fan (23) stops. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 17 There are six anti-frost heaters in total. Refer to ‘Anti-Frost Heaters’ on page 74 for replacement procedure. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 18: Components And Their Function

    Error Code 14 if the heat exchanger gets too hot. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 19: In-Series Gas Boosting

    Typical Installation - Solar In-Line Gas Booster Solar Pumped Open Circuit Systems TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 20: Tempering Valves

    (refer to diagram). TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 21: Remote Temperature Controllers

    (water temp or water volume) Controller Water volume ON / OFF button button TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 22 (refer to notes below). TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 23 To prevent the alarm from sounding, press the water volume button twice to turn it off. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 24 48°C at all locations. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 25 Bath Fill mode. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 26: Bath Fill Operation

    Water flow control valve Bath fill operation Bath fill lamp off open completed TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 27 MUST be connected to the same phase for EziSET to operate correctly. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 28: Ez-Link System

    2 indicates the unit which does not have the remote controller connected has the fault. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 29 It is normal for only one heater to operate under low flow conditions. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 30: Maintenance Information

    X = Not detecting flame O = Is detecting flame Flame Rod 1 TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 31 (flow rate in litres per minute etc). TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 32: Resetting Error Codes

    5. Open and close a hot tap to complete the reset procedure. 6. Refit the water heater front panel. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 33: Operational Flow Charts

    Heat exchanger fin brush WH0020083 Probe to alligator clip kit WH0020084 TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 34 G.I.S.V (SVO) on Igniter on P.G.F.R Valve off S.V.3 (SV3) on TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 35 15 seconds disconnected failure Failure Failure working? TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 36 Approx. 6 minutes later Isolate power Locate and repair fault. Clear error code 99. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 37: Error Codes

    PCB. Ensure the hot and cold plumbing to the heater is not reversed. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 38 Check Transformer. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 39: Diagnostic Test Points

    GR6 – BK8 switch is normal. 4 – 6VDC (Limiter Off) TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 40: Thermistor Resistance Chart

    Be careful to avoid injury on the sharp edges. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 41: Fault Diagnosis Sequence

    Heater operation appears to be normal TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 42: Power Supply Fault-Finding

    PCB and terminals Y & Z on LED1? Rectify wiring and fully insert all multi-pin connectors. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 43 Normal voltage is between 144V and 192V DC. cycle without fault code being displayed. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 44: No Error Code Fault Finding

    Normal operation. 3y = Water temp detected by water inlet thermistor TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 45 Check for excessive wear of turbine or blockage by foreign material such as thread tape. The power must be isolated during water flow sensor removal. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 46: Error Code 11

    Is the ignition electrode Replace ignition electrode. damaged? Replace ignition module. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 47 Clean the flame rod electrode and main burner. Replace if necessary. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 48 8 Black 8 Black 6 Blue 6 Blue 8 Black 8 Black TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 49 Normal resistance should be between 50 - 500 Normal voltage should be 1 - 100VAC. kilo-ohms. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 50: Error Code 12

    Adjust or replace flame sensor or lead. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 51: Error Code 14

    Refer to connections are securely section on burner pressure fastened. adjustment. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 52: Error Code 16

    Replace control PCB. correct? TEST 12 Replace the gas valve assembly. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 53: Error Code 24

    Refer to section on burner clear and free of debris pressure adjustment TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 54: Error Code 31, 32, 33 & 34

    Is each Rectify thermistor connections. connector correctly fitted? Replace control PCB. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 55: Error Code 51

    Clean or replace the flame rod maintenance information ‘0y’ electrode. indicate 01? Replace the control PCB. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 56: Error Code 52

    Isolate power to clear error code. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 57 NOTE: Short circuit at test point 20 will damage the transformer and a short circuit at test point 21 will damage the fan. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 58 NOTE: Short circuit at test point 23 will damage the transformer and a short circuit at test point 24 will damage the PCB. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 59 3600 7450 27L Int Prop 3250 6750 3450 7150 3650 7550 TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 60: Error Code 65

    PCB. TEST 29 Replace water bypass control assembly. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 61: Error Code 71

    Error Code 72 Follow the same procedure as used in Error Code 51. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 62: Error Code 76

    Replace the fan assembly. redisplayed? Refer to Error Code 61 procedures. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 63: Error Code 80

    If this does not fix the problem, then the issue lies in the fan motor or PCB. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 64: Error Code 99 / Warning Code 10

    Internal Models – As the unit is a room sealed heater the air supply for combustion is delivered via the coaxial flue. Ensure that the correct Rheem approved coaxial fluing has been fitted. If the Rheem approved coaxial flue is not fitted the unit may be starved of oxygen and excessive vibration/noise will be generated.

  • Page 65: Eziset ® Fault-Finding

    Pairing Mode* plugged in. * contact the Rheem Technical Helpline for assistance. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 66 Contact the Rheem Technical Helpline for assistance if fault remains. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 67: Burner Gas Pressure Check & Adjustment

    5. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 68: Component Replacement Procedures

    5. Undo the two wiring harnesses to free wires and remove LED display. 6. Reassembly in reverse order of above. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 69 7. Position the Overheat Limiter correctly as per step 6 of procedure 23 on page 76 8. Test for gas leaks using soapy water solution. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 70 (replace gaskets if required). 9. Test for gas leaks with soapy water solution. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 71 9. Reassemble in reverse order of above. Ensure an o’ring is fitted to each of the three connections on the water bypass control assembly. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 72 8. Reassemble in reverse order of above. Ensure turbine is correctly centred and all o’rings are fitted. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 73 5. Disconnect the ambient thermistor lead from the blue cable connector. 6. Reassemble in reverse order of above. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 74 10. Position the Overheat Limiter correctly as per step 6 of procedure 23 on page 76. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 75 7. Test for gas leaks using soapy water solution 8. Check for water leaks. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 76 (open circuit), resulting in error code 14 being displayed and rendering the water heater inoperable. Fig 4 TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 77 4. Remove the air intake hood from heater cabinet. 5. Reassemble in reverse order of above. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 78 (individual spare parts are not available, use complete EziSET kit 052310 when replacing parts). TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 79: Fluing Requirements For Internal Models

     The horizontal flue terminal is connected to the flue pipe. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 80 This prevents rainwater from entering the flue and draining back into the water heater. TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 81 Typical Fluing Diagrams Typical Installation – Horizontal Terminal with One Bend TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 82 Vertical Terminal with Vertical and Horizontal Sections Typical Installation Horizontal Terminal with Multiple Vertical and Horizontal Sections TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

  • Page 83: Document Revision History

    TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.
  • Page 84 Rheem Australia Pty Ltd ABN 21 098 823 511 TM049 27L Continuous Flow Service Instructions REV AL – Issued April 2019 This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”.

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