WL400
Manual Page 82 – Revision: 7‐16‐2018
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.
