Honeywell HM509 Owners Guide - Page 23

TrueSTEAM Humidification System

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TrueSTEAM Humidification System Troubleshooting No. of Red Light Blinks 8-11 12 13 14 15 Fault Description AutoRecoverable? Steps to Fix To be Performed by Professional HVAC Technician Only The backup weld No monitor input is active when the backup heater relay is off. Temperature of the Yes, system will electronic circuit return to "Ready" board is too high. if fault no longer exists in 1 hour. Tank failed to drain. No Heater failed to boil water. No Airflow. Yes, system will return to "Ready" if fault no longer exists in 1 hour. Yes • Replace the unit. • Ensure ventilation holes in the cover are clear of obstruction, and that 1 foot of clearance is maintained around the cover's vent holes. • 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. • 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. • Follow tank cleaning steps (pages 23-24). • Reassemble tank and press the RESET button. • If fault returns, replace the heating element with the applicable wattage replacement part. • 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. 21 69-2036EFS-07

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TrueSTEAM Humidification System
2±
69-2036EFS—07
TROUBLESHOOTING
No. of
Red
Light
Blinks
Fault Description
Auto-
Recoverable?
Steps to Fix
To be Performed by Professional HVAC Technician Only
8–11
The backup weld
monitor input is active
when the backup
heater relay is off.
No
• Replace the unit.
12
Temperature of the
electronic circuit
board is too high.
Yes, system will
return to “Ready”
if fault no longer
exists in 1 hour.
• Ensure ventilation holes in the cover are clear of
obstruction, and that 1 foot of clearance is maintained
around the cover’s vent holes.
• 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.
13
Tank failed to drain.
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.
14
Heater failed to boil
water.
Yes, system will
return to “Ready”
if fault no longer
exists in 1 hour.
• Follow tank cleaning steps (pages 23–24).
• Reassemble tank and press the RESET button.
• If fault returns, replace the heating element with the
applicable wattage replacement part.
15
No Airflow.
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.