Fault Finding Chart 4, 4.1 & 4.2 - Rheem 70103 Service Instructions Manual

Fault Finding Chart 4, 4.1 & 4.2 (Proxy Display required 703 series or use Chart 4a)
4
Is 240 volts present
at the power point?
(TEST 1)
YES
Test 2A for 3 – 15L models
Is 240 volts present
Test 2B for 25 & 40L models
at terminal block?
(TEST 2A or 2B)
YES
Test 3A for 3 – 15L models
Is 240 volts present
Test 3B for 25 & 40L models
at control board?
(TEST 3A or 3B)
YES
Does timer display an
error code other than
error code B?
NO
Is water supply
4.1
to BWU ok?
YES
Is high level probe
insulation correct length?
YES
Are all plugs & sockets
4.2
firmly connected?
YES
Does water flow freely
from tap past model
capacity?
NO
Is inlet solenoid
resistance correct?
(TEST 7)
Notes:
(1) 701, 702 & 703 Series BWU's do not use a
Chiller, therefore error code B will always be
displayed. This is normal operation.
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
Household wiring or power
point faulty. Advise customer
to call an electrician.
(1) Refer to section on 'Timer"
i.e. can 4L be drawn from
a 3L model?
Is 240 volts present
YES at inlet solenoid?
(TEST 8)
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
NO at the power point?
(TEST 1)
NO
NO
YES
NO
NO
NO
YES
NO
Is BWU inlet
YES strainer
blocked?
YES
Faulty fuse replaced. Check
YES
appliance operation.
Replace faulty cord set.
Repair O/C wiring.
Refer to fault finding chart for
error code displayed.
Restore water supply to BWU.
Ensure stop cock or isolation
valve is open. If an additional
water filter is installed check to
ensure it is not blocked.
Replace level probe.
Firmly reconnect plug socket(s).
Normal operation. If original fault
was for error code J and error
code J is still displayed then
replace control board.
Replace inlet solenoid valve.
NO Replace control board.
YES Clean or replace inlet strainer.
Check for blockage or restriction
in pipe work, inlet solenoid valve
NO
(including flow regulator) or
1.1
BWU tap.
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