Honeywell Steam Humidifier Professional Installation Manual page 53

No. of Fault Description
Service LED
Blinks
4 Heating element
overheated.
5 Input voltage
insufficient.
6 Water overflow
sensed.
Steam Humidifier System 69-2285—09
Auto-Recoverable? Steps to Fix
(Performed Only By Professional HVAC Technician)
No
If this is a new install:
1. Reset the error code and power cycle the unit.
2. If the error code comes back, replace the unit.
If the unit has been in service while:
1. Troubleshoot the water sensor
2. If troubleshooting indicates a sensor issue, replace the sensor.
3. If that does not resolve the issue the entire unit will need to be
replaced.
Yes, system will 1. Verify the electrical circuit is not overloaded.
return to "Ready" 2. Unplug and replug steam humidifier in to see if the fault
if fault no longer returns.
exists in one hour. 3. If the fault returns, unplug steam humidifier and remove cover.
4. Ensure wiring connections are secure and attached.
5. If the fault returns, replace steam humidifier. (Field service is
not recommended if line voltage is lost.)
Yes, system will Overflow error code is usually caused by one of two things:
return to "Ready" 1. Back pressure on the nozzle or remote hose.
2. Back pressure on the drain tube.
if fault no longer
exists in one hour.
Ensure that static duct pressure is not above .5" wc.
If this is a remote install:
1. Make sure the remote hose has a minimum rise of 2" per foot.
Flat, or downhill pitches, even a sharp bend can contribute to
back pressure.
2. Ensure that remote hose rises 6" from the steam humidifier
before it angles to the remote mount location.
3. Ensure that the remote nozzle is not pointing in to the airflow.
Drain Tube:
1. Ensure that the has s steady downhill pitch with no flat or
uphill areas.
2. Ensure drain hose is not kinked or submerged in water at the
drain.
3. Check functionality of condensate pump, if used.
If the above does not resolve the issue:
1. Follow the tank cleaning steps listed in the manual.
2. After cleaning, if the fault returns, unplug steam humidifier
3. Loosen cover screw & remove cover.
4. Troubleshoot water sensor.
5. Replace sensor if infinite resistance is not shown from P1 &
P3, P1 & P4, P2 & P4 and P4 & P5
6. Press button to Reset unit.
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