TROUBLESHOOTING YOUR HUMIDIFIER
Table 3. Troubleshooting Humidifier
Problem
What to look for
What to do
Water leakage
Leaking joints.
Shut off water.
Tighten connections.
Brass tubing
inserts
Verify that brass tubing inserts are used.
Saddle valve
leaking.
Verify rubber gasket is installed on saddle
valve.
No water to drain.
Electrical
Verify control circuit wiring.
Check all connections.
Humidistat
Turn humidistat up and down and listen for
contact to click.
Humidifier
power
Verify that outlet has power.
Sail switch
Remove sail cover; turn on furnace fan and
listen for faint click.
Verify that sail can move freely in duct; check
sail switch instructions to trim sail, if
necessary.
Solenoid
After verifying other wiring components, turn
on furnace fan, turn humidistat up and down,
and listen for solenoid to click.
Plumbing
Verify plumbing connections.
Check for kinks.
Saddle valve
Verify that Saddle Valve needle pierces
water line, and has been backed out so that
the valve is open.
Humidifier
Remove cover and verify that water flows
into distribution tray.
Drain tubing
Verify no obstructions.
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