Install Instructions

OPERATION

AND SERVICE

Water Level Sensor Troubleshooting Steps

WARNING: Electrocution Hazard.

This test should be done when current is not present on pins. Always unplug the humidier

before testing.

Test Setup

• Remove and drain the tank. The tank must be

empty.

• Remove the connector from the water level sensor.

Test Pins

Test is done in 5 pins as shown in the gure below.

Testing for Shorts

• Use an OHM METER and set it to the highest

setting.

• Place the OHM METER PROBES on top of sensor

probes.

• Measure the resistance between the following

locations:

Between P1 and P3

Between P1 and P4

Between P2 and P4

Between P4 and P5

Good Water Sensor

The water sensor is good if all pins show an innite

reading.

Bad Water Sensor

The water sensor is bad if any pins show Ohms

reading. This water sensor should be replaced.

TrueSTEAM Humidication System 69-2285—05 49

M32994

WATER LEVEL

SENSOR