WL290
Manual
Page 57 Revision 9‐3‐2019
HOT WATER TROUBLESHOOTING INDEX
1.
Hot Water is not Hot 85°C (185°+/‐ 5°F)
Included in this section are the Two Resettable Hot Tank Overloads (High Limit Safety)
Instructions.
1.
Hot Water is not Hot 85°C (185° +/‐ 5° F)
The Hot temperature set point is 85°C (185° F) and is controlled by a thermistor in the well of
the Hot Tank.
There are two Hot Tank Overload Devices (High Safety Limit) on the side of the Hot 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 1.6 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 Red Heater and Compressor
switch is on.
Turn Red Heater and Compressor Switch on.
I = ON
Hot Tank Overload Devices
(High Safety Limit) tripped
Hot Tank Overload Devices
(High Safety Limit) is a safety
feature to ensure the tank does
not overheat.
Hot Tank Overload Devices (High Safety Limit) will “click”
when pushed. The Hot Tank Overload Devices (High
Safety Limit) are automatically reset when pressed.
See Resetting
Hot Tank Overload Devices (High Safety
Limit) Instructions that are included further below in this
Troubleshooting Section
Hot Tank Overload Devices
(High Safety Limit) “open” on
Hot Tank
Turn Power off.
Check OHM’s resistance across terminals on each of the
Hot Tank Overload Devices (High Safety Limit) separately.
Good components will indicate a closed circuit or zero
OHM’s on the meter.
Replace components 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.
