WaterLogic WL400 Troubleshooting
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Also See for WL400:
- Manual (84 pages) ,
- Operating, installation and service manual (73 pages) ,
- Service manual (31 pages)
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HOT WATER TROUBLESHOOTING INDEX
Hot Water Problems
1. Hot Water is not Hot 185° +/- 5°
2. Boiling of the Hot Tank at higher elevations
Also includes related instructions for
Disabling Sleep Mode
Resetting the Hot Tank Overloads or High Limit Safety
1. Hot Water is not Hot (185° +/‐ 5° F)
The Hot temperature set point is 185° and is controlled by a thermostat on the side of the tank.
There are two resettable overloads 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 1.2 Liter of room temperature (ambient) water
to the 185°F set point.
Possible Reason
Is unit in sleep mode?
No power to heater elements
Loose or improperly
connected wire(s) to the
heating element / hot tank.
WL400 Manual Page 80 – Revision: 7‐16‐2018
If no water has been dispensed for 3 or more hours, unit goes into
sleep mode. Dispense hot water, wait 5 minutes, check
temperature.
If unit still does not heat proceed to "No power to heater
elements" below.
See Disabling Sleep Mode Instructions that are included further
below in this Troubleshooting Section
Check that the Green Heater /
Compressor switch is on. I = ON
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.
*Typically, dealers swap out the hot tank at site, take back to the
shop to repair.
Solution
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Related Manuals for WaterLogic WL400
Summary of Contents for WaterLogic WL400
- Page 1 The Hot temperature set point is 185° and is controlled by a thermostat on the side of the tank. There are two resettable overloads 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 1.2 Liter of room temperature (ambient) water to the 185°F set point. Possible Reason Solution If no water has been dispensed for 3 or more hours, unit goes into sleep mode. Dispense hot water, wait 5 minutes, check temperature. If unit still does not heat proceed to “No power to heater Is unit in sleep mode? elements” below. See Disabling Sleep Mode Instructions that are included further below in this Troubleshooting Section Check that the Green Heater / No power to heater elements Compressor switch is on. I = ON Visually inspect wire leads gong to the hot tank; confirm proper connections to the heating elements. Loose or improperly connected wire(s) to the Hot tank life is 3‐5 years, depending on usage. heating element / hot tank. *Typically, dealers swap out the hot tank at site, take back to the shop to repair. WL400 Manual Page 80 – Revision: 7‐16‐2018 ...
- Page 2 Overloads will “click” when pushed. The overload is automatically Overloads Tripped reset when pressed. Overloads are a safety feature See Resetting the Hot Tank Overloads or High Safety Limit to ensure the tank does not Instructions that are included further below in this overheat. Troubleshooting Section Turn Power off. Check OHM’s resistance across terminals on each Thermostat and Overloads separately. Thermostat or overloads Good components will indicate a closed circuit or zero OHM’s on “open” on Hot Tank the meter. Replace components as necessary. Turn Power off Drain hot tank Use multi‐meter to check heater element for approximately 26 Heating Coil not Working OHM’s resistance. Hot tank must be empty if you are checking for continuity. Replace Hot Tank as necessary. WL400 Manual Page 81 – Revision: 7‐16‐2018 ...
- Page 3 2. Boiling of the Hot Tank at higher elevations The WL400 Water Treatment System has an extra hot temperature reset preset to 95°C (203°F). This leads to boiling of the Hot Tank at higher elevations. There are two options to correcting this issue. Option 1 ‐ Replace Main PCB Part Number EN‐6137 (Waterlogic Spare parts have a lower 90°C (194°F) Extra Hot Setting. Option 2 ‐ Turn down the temperature calibration on the Main PCB Part Number EN‐6137. 1. Remove Left Hand Side Panel 2. Remove the Main PCB Metal Cover 3. Access and locate the Hot Temperature Calibration Trimmer (potentiometer) on the Main PCB 4. Turn the Hot temperature calibration counterclockwise from 12:00 position to 11:00 position 5. Check the output temperature of both the Hot and Extra Hot. Extra Hot should be approximately 87.8 – 90.6 °C (190 ‐195°F) at the faucet. WL400 Manual Page 82 – Revision: 7‐16‐2018 ...
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Page 4: Disabling Sleep Mode
DISABLING SLEEP MODE Sleep Mode ‐ press any button to bring machine out of sleep mode WL400 Manual Page 83 – Revision: 7‐16‐2018 ... - Page 5 Turn off Green Heater/Compressor Switch on rear of unit. O=OFF 1. 2. Unplug the Power Cord from rear of unit. Remove Two Screws Remove the Tower Cover Locking Screws and Slide 3. Locks towards outside of unit to unlock both locks. Slide Locks Open 4. Slide Top Cover forward and lift in front of top cover to open. Remove the 2 Phillips Screws from Left Side Panel (when standing 5. behind unit) and remove side panel. Check and press both Thermal Overload buttons on Hot Tank. 6. 7. Close, lock and replace Top Cover Screws Turn on Red Power Switch and Green Heater / Compressor 8. Switch. I=ON WL400 Manual Page 84 – Revision: 7‐16‐2018 ...
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