Fault Finding Chart 5 - Rheem 70103 Service Instructions Manual

Fault Finding Chart 5 (Proxy Display required for 703 series or use chart 5a)
5
Is 240 volts present
at the power point?
(TEST 1)
YES
Test 2A for 3 – 15L models
Test 2B for 25 & 40L models
Is 240 volts present
at terminal block?
(TEST 2A or 2B)
YES
Test 3A for 3 – 15L models
Test 3B for 25 & 40L models
Is 240 volts present
at control board?
(TEST 3A or 3B)
YES
Refer to section
Does timer display an
error code other than
error code B?
NO
Does timer
display work?
(proxy timer display
703 series)
Refer to section
YES
on 'Timer"
Do all timer functions
operate?
TM063 701, 702 & 703 Series Boiling Water Unit Service Instructions
Revision D: Feb 2017
This document is stored and maintained electronically by
Is the fuse blown at
NO
the switchboard?
NO
701, 702 & 703 Series BWU's do not use a Chiller, therefore error
on 'Timer"
code B will always be displayed. This is normal operation.
Are timer ribbon
NO cables firmly
connected?
Are timer ribbon
NO cables firmly
connected?
YES
Has timer been
operated and/or
programmed
correctly?
YES
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
YES Replace fuse
Did the fuse blow
again?
NO
Is 240 volts present
at the power point?
(TEST 1)
NO
NO
NO
YES
YES
NO
NO
Refer to section
on 'Timer"
NO
YES
1.1
YES
Faulty fuse replaced. Check
YES
appliance operation.
Household wiring or power point
faulty. Advise customer to call
an electrician.
Replace faulty cord set.
Repair O/C wiring.
Refer to fault finding chart for
error code displayed.
Replace timer.
Ensure timer ribbon cables are
firmly plugged into sockets on
rear of timer and socket on
control board.
Advise customer on timer
operation and/or how to
program timer.
Replace timer.
Timer ok.
37