Troubleshooting - Honeywell TrueSTEAM HM612A1000/U Installation Manual

Troubleshooting

Steam Humidifier has internal system diagnostics that monitor operation, maintenance schedules, and faults. If a
system fault is detected, Steam Humidifier will attempt to recover up to five times in a 24-hour period.
• If Steam Humidifier is unable to recover by itself within 24 hours, the red Service light blinks in a series that
indicates the fault detected.
• Refer to the table below for the fault indicated, along with the steps to fix Steam Humidifier.
• Press and hold the Go button until the Service light turns off.
No. of Fault Description
Service LED
Blinks
1 Water Heater
temperature sensor is
out of range.
2 Water sensors failed.
3 Failure to fill tank
with water.
Steam Humidifier System 69-2285—11
Auto-Recoverable? Steps to Fix
(Performed Only By Professional HVAC Technician)
Yes, steam 1. Unplug steam humidifier & remove cover
humidifier will reset 2. Check Water sensor connection to board. Remove and plug
if fault no longer back in.
exists in one hour. 3. Press the Go button.
4. If fault returns, replace steam humidifier
Yes, steam 1. Unplug steam humidifier and remove cover.
humidifier will reset 2. Disconnect water level sensor wiring.
if fault no longer 3. Ohm out water sensor
exists in one hour. 4. Readings between P1 & P3, P1 & P4, P2 & P4 and P4 & P5
should all show infinite resistance. If they do not replace the
sensor.
Yes, system will 1. Ensure inlet water is on.
return to "Ready" 2. Check for voltage on the fill terminals for the solenoid valve
if fault no longer (should be appox. 120vac)
exists in 3. Check for leaks around the tank seal and solenoid.
three hours. 4. If using an RO filter make sure the flush timer is set for 30
hours
5. If using an RO filter, follow troubleshooting information as
outlined in RO install guide.
6. If not using an RO filter, turn off water supply and replace any
in line water filter.
7. Press and hold the go button until res Service light turns off.
8. If tank still fails to fill, press the Drain button.
9. If tank fails to drain, unplug steam humidifier (and make sure
water in tank is cool before proceeding).
10. Follow the tank cleaning steps.
11. Ensure you have a firm grip on the tank before releasing the
tank, especially if water is present.
12. Clear any excess debris from the tank's bottom orifice to the
solenoid.
13. Reassemble tank and plug steam humidifier back in. Press the
button to reset. If water still fails to fill into the tank, replace the
solenoid valve
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