Honeywell Steam Humidifier - Water Level Sensor Troubleshooting; Water Level Sensor Testing

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.
Steam Humidier System 69-2285—09
48
M32994
P1
P2
P3
WATER LEVEL
SENSOR
P4
P5