WaterLogic WL350 Troubleshooting Manual
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Also See for WL350:
- Operating, installation and service manual (73 pages) ,
- Manual (31 pages) ,
- Troubleshooting manual (16 pages)
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1. Hot Water is not Hot 86°± ‐1.5°C (187°± 5°F)
Also includes related instructions for:
Disabling Energy Star Sleep Mode
Resetting the Hot Tank Overload or High Safety Limit
Programming "Changing Hot Water Mode to Ambient Water Mode"
1. Hot Water is not Hot 86°± ‐1.5°C (187°± 5°F)
The Hot Temperature set point is 85°C (185°F) and is controlled by a thermostat on the side of the
Hot Tank.
There is a resettable overload or high limit safety above the thermostat 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).
The WL350 Water Treatment System is programmable to make Cold / Ambient water – refer to
Disabling Sleep Mode instructions included further below in this Troubleshooting Section.
The WL350 Water Treatment System does NOT have Extra Hot capability and the maximum hot
temperature is 87°C (189°F).
It typically takes 10 minutes for the 500W to heat the 1.6 Liter (0.4 Gallon) of room temperature
(ambient) water to the 85°C (185°F) set point.
Possible Reason
No Power
Is unit in Energy Star
Sleep Mode?
Hot Tank Overload
Tripped
Overload is a safety
feature to ensure the
tank does not
overheat.
WL350 Manual
HOT WATER TROUBLESHOOTING INDEX
Check that the Red Heater & Compressor switch is on.
Turn Red Heater & Compressor Switch on.
I = ON
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.
If unit does heat but you would like to Disable Sleep Mode, refer to the
instructions included further below in this Troubleshooting Section
Overload will "click" when pushed. The overload is automatically reset when
pressed.
See Resetting the Hot Tank Overload or High Limit Safety Instructions that
are included further below in this Troubleshooting Section
Page 76 – Revision 11‐21‐2018
Solution
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Summary of Contents for WaterLogic WL350
- Page 1 Resetting the Hot Tank Overload or High Safety Limit Programming “Changing Hot Water Mode to Ambient Water Mode” 1. Hot Water is not Hot 86°± ‐1.5°C (187°± 5°F) The Hot Temperature set point is 85°C (185°F) and is controlled by a thermostat on the side of the Hot Tank. There is a resettable overload or high limit safety above the thermostat 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). The WL350 Water Treatment System is programmable to make Cold / Ambient water – refer to Disabling Sleep Mode instructions included further below in this Troubleshooting Section. The WL350 Water Treatment System does NOT have Extra Hot capability and the maximum hot temperature is 87°C (189°F). It typically takes 10 minutes for the 500W to heat the 1.6 Liter (0.4 Gallon) of room temperature (ambient) water to the 85°C (185°F) set point. Possible Reason Solution Check that the Red Heater & Compressor switch is on. ...
- Page 2 Good components will indicate a closed circuit or zero OHM’s on the meter. Hot Tank Replace components as necessary. Visually inspect wire leads gong to the hot tank; confirm proper connections Loose or improperly to the heating elements. connected wire(s) to Hot tank life is 3‐5 years, depending on usage. the Heating Element *Typically, dealers swap out the Hot Tank at site, take back to the shop to / Hot Tank. repair. Turn Power off; Drain hot tank; Use multi‐meter to check Heater Element for approximately 26 OHM’s resistance. Heating Coil Not Hot Tank must be empty if you are checking for continuity. Heating Replace Hot Tank as necessary. The unit has been changed to a cold/ambient setting (JP9 has been moved from Pin 1 and Pin 2). Improper Jumper Settings Verify that Jumper Pins are located properly for Hot Water Option. See Changing Hot Water Mode to Ambient Water Instructions included further below in this Troubleshooting Section WL350 Manual Page 77 – Revision 11‐21‐2018 ...
- Page 3 DISABLING ENERGY SAVING SLEEP MODE All WL350 Water Treatment Systems come from the factory with Energy Saving Sleep Mode engaged to meet the Energy Star Certification requirements. Energy Saving Sleep Mode disables the heater circuit if the unit has not been used for a continuous 3 hour or longer period. Selecting any button "wakes up" the WL350 Water Treatment System and turns the heater circuit back on. The hot tank will typically take less than 10 minutes to heat the water from ambient to the 85°C (185°F) set point. Unplug Power Cord and remove Top Cover to access Energy Saver PCB. Pin Numbers Energy Saver PCB – P/N EN‐6131 – WLCP PN 20‐0075 1 2 1 2 WL350 Water Treatment Systems comes with the Energy Saving Sleep Mode “ON” PCB Jumper JP7 in the "ON" position (Pin 1 and 2) 2 3 ...
- Page 4 RESETTING THE HOT TANK OVERLOAD OR HIGH LIMIT SAFETY Red Compressor/Heater Switch must be in the O=OFF position 1. 2. Unplug the Power Cord from rear of WL350 Water Treatment System. Tower Model: Remove the Lower Front Panel by removing the Phillips Head Screws underneath the Lower Front Panel. 3. Counter Top Model: Remove the Side Panel by removing Phillips Head Screws from Side Panel. Locate the Protective Metal Box on the rear of the Hot Tank. Looking through the condenser coils on the rear of the unit, you will see the Hot Tank located on the right‐hand side. 4. From the front of the Water Treatment System, reach up behind the hot tank and take hold of the protective metal box covering the thermostat and overload on the hot tank. There are nuts that secure the Protective Metal Box to the Hot Tank, are loose enough to allow you to remove the Protective Metal Box. 5. If the nuts on the metal box are too tight, loosen the nuts securing the Hot Tank to the upper base of the WL350 Water Treatment System unit and lower the Hot Tank so you can remove the Protective Metal Box. WL350 Manual Page 79 – Revision 11‐21‐2018 ...
- Page 5 For demonstrative purposes, photos below have lowered the hot tank from the unit. Press the reset button 6. Reattach the Protective Metal Box by depressing the top flap of the Protective Metal Box so it snaps back into its original position on the Hot Tank. 7. 8. Replace the Lower Front Panel. 9. Plug in the Power Cord. Turn on the Red Compressor/Heater Switch I=ON position 10. The Hot and Cold tanks must be filled with water BEFORE turning on the Red Heater and Compressor Switch. 11. Verify the cooler is fully operational before installing it at the customers’ site. WL350 Manual Page 80 – Revision 11‐21‐2018 ...
- Page 6 CHANGING HOT WATER MODE TO AMBIENT WATER WL350 Water Treatment Systems comes with set to Hot / Cold, which can be changed to Ambient / Cold settings. On the Move the Jumper on JP9 from Pins 1 and 2 to Energy Saver PCB, Pins 2 and 3. Unplug Power Cord and remove Top Cover to access Energy Saver PCB. Energy Saver PCB – P/N EN‐6131 – WLCP PN 20‐0075 Pin Numbers 1 2 2 WL350 Water Treatment Systems comes with Hot and Cold Water factory settings. PCB Jumper JP9 in positions ‐ Pin 1 and 2 ...
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