Table Of Contents - Rheem 70103 Service Instructions Manual

Contents
Introduction ................................................................................................................................................. 3
Safety Warning ........................................................................................................................................... 3
BWU Model Identification ........................................................................................................................... 4
Preventative Maintenance .......................................................................................................................... 5
Specifications ............................................................................................................................................. 6
Wiring Diagrams ......................................................................................................................................... 7
Wiring Diagram 3 - 15L Models ................................................................................................................. 7
Wiring Diagram 25 & 40L Models .............................................................................................................. 7
Plumbing Diagram ...................................................................................................................................... 8
Operation .................................................................................................................................................... 8
Operational Flow Chart - 701 & 702 Series ............................................................................................ 11
Operational Flow Chart - 703 Series ....................................................................................................... 12
Electronic Controller ................................................................................................................................. 13
Timer - 701 & 702 Series......................................................................................................................... 13
Timer Functions ........................................................................................................................................ 14
Setting the Clock ...................................................................................................................................... 15
Accessing Service Menu .......................................................................................................................... 17
Eco Timer 703 Series ............................................................................................................................... 20
Eco timer LED Indication (NZ Pre-2014 Models) ..................................................................................... 21
Activate calibration reset mode (NZ Pre-2014 Models) ........................................................................... 21
Eco timer LED Indication (Standard)........................................................................................................ 22
Activate calibration reset mode (Standard) .............................................................................................. 22
Components and their Function ............................................................................................................... 23
Common Complaints ................................................................................................................................ 24
Fault Finding ............................................................................................................................................. 24
Error Codes (701 & 702 Series Only) ...................................................................................................... 25
Error Codes (703 Series only) .................................................................................................................. 25
Testing the Boiling Water Thermistor ....................................................................................................... 26
Error Codes A, B, C, D ............................................................................................................................. 28
Error Codes E, G ...................................................................................................................................... 29
Error Codes H, J ....................................................................................................................................... 30
Error Codes K, L N ................................................................................................................................... 31
Fault Finding Chart 1 ................................................................................................................................ 32
Fault Finding Chart 1.1, 1.1a .................................................................................................................... 33
Fault Finding Chart 2, 3 ............................................................................................................................ 34
Fault Finding Chart 4, 4.1 & 4.2 ............................................................................................................... 35
Fault Finding Chart 4a, incl. (4.1 & 4.2) ................................................................................................... 36
Fault Finding Chart 5 .............................................................................................................................. 37
Fault Finding Chart 5a .............................................................................................................................. 38
Fault Finding Chart 6 ................................................................................................................................ 39
Fault Finding Chart 7 ................................................................................................................................ 40
Fault Finding Tests ................................................................................................................................... 41
Electrical Safety Testing ........................................................................................................................... 44
Component Replacement Procedures ..................................................................................................... 46
Exploded view 1: 701 series Office model 3 & 5 litre ............................................................................... 55
Exploded view 2: 702 series Commercial model 7.5 - 40 litre ................................................................. 56
Exploded view 3: 703 series Eco model 3 - 7.5 litre ............................................................................... 57
Document Revision History ...................................................................................................................... 58
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TM063 701, 702 & 703 Series Boiling Water Unit Service Instructions
Revision D: Feb 2017
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