WL3 FX
Manual
Page 78 - Revision: 7-27-2022
HOT WATER TROUBLESHOOTING INDEX
Hot Water Problems
1.
Hot Water is not Hot 85°C +/- 15°C (185°F +/- 5°F)
2.
Hot Water Icon blinks and audible alarm sounds
Also includes related instructions for Resetting the Hot Tank Overload or High
Limit Safety
1. Hot Water is not Hot 85 +/- 15°C (185° +/- 5° F)
NOTE:
The Hot temperature set point is 85°C +/- 15°C (185°F +/- 5° F) and is controlled by a
thermostat on the side of the tank.
There is a resettable overload or high limit safety above the thermostat on the side of the tank
that will trip to prevent damage to the unit if the tank is dry heated (turned on without water in
it).
It typically takes 10 minutes for the 500W to heat the 1.5 Liter of room temperature (ambient)
water to the 85°C (185°F) set point.
Possible Reason
Solution
No power to heater elements
Check that the Green Heater and Compressor
switch is on.
Turn Green Heater and Compressor Switch on.
I = ON
Hot Tank Overload Tripped
Overload will “click” when pushed. The overload is
automatically reset when pressed.
Thermostat or overload
“open” on Hot Tank
Turn Power off. Check OHM’s resistance across terminals on
each Thermostat and Overload separately.
Good components will indicate a closed circuit or
“0.00”
OHM’s on the meter.
Replace components as necessary.
Heating Coil Not Working
Turn Power off; Drain hot tank; Use multi-meter to check
heater element for approximately 26 OHM’s resistance.
Hot Tank must be empty if you are checking for continuity.
Replace Hot Tank as necessary.
Loose or improperly
connected wire(s) to the
Heating Element / Hot Tank.
Visually inspect wire leads gong to the hot tank; confirm
proper connections to the heating elements.
Hot tank life is 3-5 years, depending on usage.
