Honeywell HM509VPIAQ - TrueSTEAM 9 GPD Humidifier PRO IAQ Owner's Manual page 23

No. of Fault Description
Red
Light
Blinks
8–11 The backup weld
monitor input is active
when the backup
heater relay is off.
12 Temperature of the
electronic circuit
board is too high.
13 Tank failed to drain.
14 Heater failed to boil
water.
15 No Airflow.
Auto- Steps to Fix
Recoverable? To be Performed by Professional HVAC Technician Only
No • Replace the unit.
Yes, system will • Ensure ventilation holes in the cover are clear of
return to "Ready" obstruction, and that 1 foot of clearance is maintained
if fault no longer around the cover's vent holes.
exists in 1 hour. • Ensure the TrueSTEAM is installed in a location with
conditioned air 32°F (0°C) to 104°F (40°C).
• Turn humidistat off and allow time for electronic board to cool.
• Turn humidistat on and press RESET button.
• Confirm humidity call starts by HUMIDIFYING light turning on.
• Allow unit to run and check for steam leaks around tank and
ventilation holes.
• If steam is present, replace TrueSTEAM.
No • Water in tank may be hot (>140ºF [60ºC]).
• Press the EMPTY button.
• If unit fails to drain, wait for water in tank to cool. Ensure
tank water is cool before proceeding.
• Once cool, follow tank cleaning steps (pages 23–24).
• Reassemble tank and press the RESET button.
• If fault persists, replace the solenoid valve.
Yes, system will • Follow tank cleaning steps (pages 23–24).
return to "Ready" • Reassemble tank and press the RESET button.
if fault no longer • If fault returns, replace the heating element with the
exists in 1 hour. applicable wattage replacement part.
Yes • Ensure Differential Pressure Switch is installed and wired
correctly. See the Wiring section for proper wiring.
• Ensure DIP switches are set correctly.
• If fault persists, replace AFS and/or unit.
2
TrueSTEAM Humidification System
TRoubleshooTIng
69-2036EFS—07