38
Troubleshooting Common Service Problems
PROBLEM
POSSIBLE CAUSE
TEST/CORRECTIVE
ACTION
LEAKS AROUND TANK
FITTINGS
(e.g., drain valve, relief
valve, etc.):
The threads are leaking and need
to be resealed
Insert a cotton swab between the
jacket opening and the
fi
tting. If
the cotton absorbs water, follow
these steps:
Disconnect power, then drain the
tank (p.45).
Remove the
fi
tting and put thread
sealant or Te
fl
on tape on the
threads, then reinstall the
fi
tting.
Re
fi
ll tank (p.45).
Restore power.
See also “Leaks Around the
Elements”
The spud had developed a leak at
the weld.
Call technical support before
replacing the water heater
DRIPPING DRAIN VALVE:
Valve may be slightly open
Check to see if the drain valve
is closed tightly. If the leakage
cannot be stopped by tightening
the valve, replace it.
WATER, DISCOLORED:
Milky water: There may be build
up gases in the heated water
(oxygen, chlorine, carbon dioxide,
hydrogen sul
fi
de, etc.)
Although milky water may not
be completely eliminated, it can
be reduced by installing aerated
faucets
NOISES
(Crackling, gurgling,
popping, rumbling):
Scale / lime / mineral build up in
the water heater.
Treat the water heater with a
deliming solution (e.g. Mag-Erad
or Un-Lime). The directions for
the product should be followed
explicitly.
NOISES
(Pounding noises or
vibrations in pipes
Water hammer.
To prevent damage to the water
heater and plumbing system,
install a water hammer arrestor.
