14
HUMIDIFIRST
TROUBLE SHOOTING
IMPORTANT !!! NEVER WORK ON THE INSIDE OF THE HUMIDIFIER
WHEN THE UNIT IS PLUGGED INTO THE WALL OUTLET
Symptom:
1. The humidifier does not power up
a.
If you want the humidification system to operate and it will not, first make sure
that there is a call for humidification and that the humidistat set-point is higher
than the relative humidity in the space.
b.
Make sure the on/off switch in the “on” position.
c.
There are circuit breakers/fuses in the Master Control panel, one for the main
input power and each one for 24 vac and 48 vac. Some versions have a 120 vac
circuit breaker on the secondary of the transformer. It is possible that one is in
the “off” position or a fuse is blown.
2. If water does not flow into the humidifier body:
Check that there is power to the humidifier first and make sure that there is a call for
humidifier operation – turn the humidistat to the highest set-point.
a.
Check water source to confirm that the water is turned on.
b.
Make sure that all water connections are made.
c.
Check the circuit breakers that are located in the Master Panel on the terminal
strip.
d.
Check the float switch in the humidifier body to ensure that it moves freely.
e.
Check the relays to ensure that they are pushed in firmly.
f.
Check all internal wiring connections and make sure that none are loose.
g.
Using a volt-meter, and referring to the wiring diagram, check to see that 24 volt
power is going to the solenoid valve.
h.
If the above are checked and water does not flow to the humidifier basin then it
should be assumed that the solenoid valve has failed and needs replaced.
