15
5 - Troubleshooting
5.3 - Heater Troubleshooting
Heater is not heating water.
Possible Causes
Solutions
Loose electrical connec-
tion.
Check all electrical con-
nections, including power
cord and harness.
Automatic sensor has
failed, causing manual
sensor to trip.
Reset the manual sensor
button by pressing the
small white and yellow
button in the center of the
sensor. If this works, but
heater continues to trip the
manual sensor, replace
the automatic sensor (Part
#E573) on the heater.
Heater element has failed. Check for continuity
through the element by
reading the amperage. If
amps are low, only part of
the element may be heat-
ing up – in this case, the
element is damaged and
needs to be replaced.
Bad power switch.
If the element, sensors,
and wiring all check out
okay, there may be a bad
switch on the switch-plate.
Running out of hot water too fast.
Possible Causes
Solutions
Too much water flowing
through the heater.
Remember, when using
your machine, it is rec-
ommended you do one
wet pass followed by two
dry passes. This way you
are not spraying as much
and the hot water will last
longer.
Jets being used are too
large.
If your machine has a
1,000W or 1,200W heating
system, make sure your
cleaning tool has 0.02 jets.
Water in tank is very cold. If possible, fill your solu-
tion tank with warm water
in order to shorten the
amount of time it takes for
the water to heat up. The
pumps are usually rated
for 140°F water.
Heater has hard water
buildup inside, leading to
lost efficiency.
Run Mytee System Main-
tainer™ (Part # 3601)
through the machine regu-
larly in order to clear hard
water or chemical residue
that can block water flow
and reduce heating ability.
See product label for in-
structions.
Unit has vapor locked and there is no water pump-
ing out of the unit.
Possible Cause
Solution
Turning on the heater be-
fore turning on the pump
and priming the unit.
Turn off the heater and
allow the unit to cool
completely. When machine
has cooled, turn on the
pump first. Prime the unit
by spraying solution out
of the cleaning tool. Then,
turn on the heater.
