User Guide

Page 22
Problem Evidence Solution(s)
Low humidity No water ow in Turn thermostat up to activate heat blower
humidifier operation then check the following:
• Turn water on at saddle valve.
• Turn water off and check for obstruction in
saddle valve and filter.
• Set humidistat higher.
• Check for blown circuit breaker.
• Check all wiring connections.
• Check output voltage of transformer (24 to
29 V.A.C.).
• Test solenoid; connect good transformer
directly to leads.
• Check humidistat for continuity.
Heavy mineral Mineral buildup on the pad closes off pores
buildup and restricts airflow.
• Clean or replace the evaporative pad as
indicated in the maintenance instructions.
Short blower De-rating the furnace causes it to run longer
cycles on less fuel, and causes the humidifier to
produce more moisture.
• Call your HVAC contractor.
Drafts Drafts are caused by rapid air changes in
the home.
• Keep doors and windows closed.
• Close fireplace damper when not in use.
• Keep exhaust fan running times to a
minimum.
• Seal around doors and windows to prevent
added cold, dry air from overburdening
your humidifier.
High humidity Heavy conden- This may be a temporary condition caused
sation on by bathing, cooking, mopping, etc.
windows • Turn humidistat down enough to eliminate
condensation.
Condensation on • Turn humidistat and water supply off until
walls condensation is completely evaporated.
Model 55 Trouble Shooting Guide