Rheem 70103 - Fault Finding Chart 6

39
TM063 701, 702 & 703 Series Boiling Water Unit Service Instructions
Revision D: Feb 2017
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Fault Finding Chart 6
6
YES
Remake hose connection/
plumbing fitting or replace hose/
plumbing fitting.
Is leak from a hose or
plumbing fitting?
NO
Shorten vent line or install a
tundish. Remake vent line to
have continuous fall and/or
reduce number of bends.
NO
Replace level probe o’rings or
replace level probe.
YES
Is leak from
BW element gasket?
YES
Is BWU either a 25
or 40L model?
NO
Tighten water outlet flange bolts
or replace water outlet flange
gasket.
NO
Is leak from drain
plug?
YES
YES
NO
Is leak from drain
plug flange gasket?
Tighten drain plug flange bolts
or replace drain plug flange
gasket
YES
NO
Is leak from inlet
solenoid?
Tighten solenoid lock nut(s) or
replace solenoid.
YES
Is leak from level
probe?
NO
Unblock or replace vent line.YES
NO
Is vent line blocked? YES
is vent line installed
correctly?
NO
Replace element gasket. Check
for stripped bolts.
Vent line must be no
longer than 3m, have
continuous fall and have
no more than 4 bends.
Is leak at water
outlet flange?
YES
Replace leaking BWU tank.
NO
Tighten drain plug or replace
drain plug gasket.
The boiling water tank will have to
be removed to locate the leak.
Is leak at water
outlet flange?
Tighten water outlet flange bolts
or replace water outlet flange
gasket.
YES
Replace leaking BWU tank.
NO
The boiling water tank will have to
be removed to locate the leak.
Is leak from
BWU tap?
NO
YES Repair or replace BWU tap.