Honeywell TrueSTEAM HM512 Use and care manual

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TrueSTEAM
HM512, HM509, and HM506
TROUBLESHOOTING AND
PARTS REPLACEMENT GUIDE
69-2144-01
TROUBLESHOOTING
No. of
Red
Light
Blinks
Fault
Description
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.
• Replace the TrueSTEAM unit.
12 Temperature
of the elec-
tronic circuit
board is too
high.
•Ensure ventilation holes in the
cover are clear of obstruction,
and that 1 foot of clearance is
maintained around the cover’s
ventilation 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.
Unplugging unit and removing
cover will facilitate this.
• Turn humidistat on and press
RESET button.
• Confirm humidity call starts
(HUMIDIFYING light turns 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.
• Water in tank may be hot (>140ºF
[60ºC]) and can cause burns.
• Press and hold the EMPTY
button for 3 seconds.
• If unit fails to drain, turn
humidistat to OFF, or unplug the
humidifier and wait for water in
tank to cool. Ensure tank water
is cool before proceeding.
• Once cool, follow tank cleaning
steps in the Professional
Installation Guide (69-2036EFS).
• Reassemble tank and press the
RESET button.
• If fault persists, replace the
solenoid valve.
14 Heater failed
to boil water.
• Press and hold EMPTY button
for 3 seconds, and follow
tank cleaning steps in the
Professional Installation Guide.
• Reassemble tank and press the
RESET button.
• Initiate humidistat call.
• If fault returns, replace the unit.
TROUBLESHOOTING
No. of
Red
Light
Blinks
Fault
Description
Steps to Fix
To be Performed by Professional
HVAC Technician Only
3 Failure to
ll tank with
water.
• Ensure inlet water is on.
• Check for leaks around the tank
seal and solenoid valve.
• Turn off water supply and
replace in-line water filter.
• Press/hold RESET button until
the red Call Service light turns
off.
• If tank still fails to fill, press and
hold the EMPTY button for 3
seconds (if unit fails to drain,
unplug unit and make sure water
in tank is cool).
• Follow tank cleaning instructions
in the Professional Installation
Guide. Ensure you have a firm
grip of the tank prior to releasing
the tank, especially if water is
present.
• Clear any excess debris from
the tank’s bottom orifice to the
solenoid valve.
• Reassemble tank and plug unit
back in. Press the RESET button.
• If water still fails to flush into the
tank, replace the solenoid valve.
4 Heating
element
overheated.
• Press and hold the EMPTY
button for 3 seconds.
• Follow tank cleaning steps in the
Professional Installation Guide.
• Reassemble tank and press the
RESET button.
• If fault returns, replace with
applicable unit.
5 Input voltage
insufcient.
• Problem most likely due to
voltage variation from service
provider, or faulty wiring in
the home. If problem is due to
TrueSTEAM service alone, the
fault should correct itself when
voltage levels return to normal.
• Press and hold the RESET button
until CALL SERVICE light shuts off.
• Initiate a humidistat call for
humidity and monitor for fault
light to return.
• If fault returns, check the line
cord input voltage before and
during humidistat call. Line
voltage should not drop below
102Vrms to ensure TrueSTEAM
operates properly.
TROUBLESHOOTING
No. of
Red
Light
Blinks
Fault
Description
Steps to Fix
To be Performed by Professional
HVAC Technician Only
15 No Airow. • Unplug TrueSTEAM and remove
cover
• Validate proper wiring to
terminals R and C, using the
diagrams in the installation guide
(69-2036).
• Ensure proper connection quality
of the wires.
• Inspect R and C wires at the
HVAC equipment board, ensuring
no breaks and good connection
if wire nuts are used.
• Hook AC volt meter across
airflow switch normally-open
(N.O.) terminal and R.
• Set thermostat FAN to off and
reduce system setpoint.
• Validate 0 VAC reading on AC
Volt Meter
• Set thermostat FAN to on.
• Once blower starts, validate 20-
30VAC reading on AC volt meter.
• If voltage is not present, check
wiring and switch functionality.
Differential pressure switch may
require a new install location
(away from duct bends, etc), or it
may need to be replaced.
• If voltage is present, continue to
troubleshoot to validate proper
airflow monitoring.
• Keep AC volt meter across
airflow switch N.O. terminal and
R from HVAC unit.
• Turn humidistat off.
• Ensure DIP 4 and 5 are in off
(down) position.
• Secure TrueSTEAM cover and
plug in unit. Press the RESET
button.
• Set thermostat FAN to off and
reduce system set point.
• Set humidistat call and monitor
device. (may take 15-20 minutes)
• When sound of blower clears,
validate within 2 minutes that the
AC volt meter reads 20-30VAC.
• If time for switch to change state
takes longer than 2 minutes,
try a new install location for the
switch, where state change is
faster.
TROUBLESHOOTING
No. of
Red
Light
Blinks
Fault
Description
Steps to Fix
To be Performed by Professional
HVAC Technician Only
6 Water
overow
sensed.
• Ensure drain hose is not kinked
or submerged in water at the
drain. Check functionality of
condensate pump if used.
• Check for water coming out of
drain/overflow line. If continuous
water flow is present, follow
the cleaning steps in the
Professional Installation Guide
(69-2036).
• After cleaning, set humidistat on
and monitor operation.
• If fault returns, unplug TrueSTEAM.
• Loosen cover screw and remove
cover.
• Disconnect water level sensor
wiring and lift snap-hinge
clamp to remove water sensor
assembly. See image on page 5.
• Clean probes using warm
soapy water so that the metal
is exposed. It is OK to use steel
wool or brush.
• Reassemble the sensor
assembly in the unit, reattach
and secure cover.
• Plug unit in, and press RESET
button.
• If fault reappears, replace water
sensor assembly and/or solenoid
valve.
7 HVAC power
not present.
• Turn humidistat off.
• At thermostat, validate that the
FAN setting turns the blower on.
If not, check the circuit breaker.
If circuit is tripped, reset or
replace fuse.
• If fault persists, unplug
TrueSTEAM and remove cover.
• Validate proper TrueSTEAM
wiring to R and C terminals, using
installation guide (69-2036).
• Ensure proper connection quality
of the wires.
• Inspect R and C wires at the
HVAC equipment board, ensuring
no breaks and good connection
if wire nuts are used.
• Hook AC volt meter across R and
C to validate 20-30VAC is present.
To measure, it may be necessary
to close furnace interlock switch.
• Secure TrueSTEAM cover and plug
unit in. Press the RESET button.
• If fault persists, recheck wiring or
replace unit.
Note: If using VisionPRO IAQ to
control TrueSTEAM, it is not
necessary to monitor HVAC
power. DIP 4 may be turned on
to disable monitor.

2345
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
http://yourhome.honeywell.com
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
® U.S. Registered Trademark
© 2007 Honeywell International Inc.
All Rights Reserved
69-2144—01 M.S. 12-07
SOLENOID VALVE REPLACEMENT
CAUTION: Ensure outside of tank is cool before
removing to prevent possible injury.
Ensure the TrueSTEAM is empty, and unplug.
Shut off and disconnect the water line from the bottom
of the unit.
Unlock the red lever and disengage the tank from the
valve assembly and remove tank.
Remove TrueSTEAM from the mounting bracket.
Remove the cover with a athead or Torx screwdriver.
Disconnect the valve wire plug from the circuit board.
Using a athead screwdriver, disengage the frame’s
backplate at the four locations.
Slide the valve out of the back of the frame, and ease
the wiring out of the TrueSTEAM frame.
Reassemble with the new solenoid valve, following
steps 2–8 in reverse order.
IN-LINE WATER FILTER
Turn off water supply at the source (i.e. saddle valve)
Push in on the lter’s compression snap-lock ttings
where the 1/4-in. water line connects.
Pull out the water line as you are pushing in the snap-
locks.
Install the new water lter, ensuring directional water
ow is accurate per the lter label, by inserting the
water lines on either end of the lter.
Initiate a call for humidity by turning the humidistat on.
Check the lter after 5 minutes of humidier operation
to ensure no water leakage.
SEDIMENT SCREEN
Press and hold the EMPTY button for 3 seconds.
Water will drain from the tank and the CLEAN TANK
light will blink as it drains.
When the CLEAN TANK is on solid, the tank is empty.
Turn the water valve arm to the UNLOCK position.
Grip the solenoid toggle valve and slide it back to
disengage.
Hold bottom of the tank while pressing down the safety
release button on the cover and slide the handle
forward.
The sediment screen is on the inside of the tank at the
bottom. Push the release button away from the tank
wall to disengage the screen.
Pull out and clean or replace the screen.
1.
2.
3.
4.
5.
6.
7.
8.
9.
1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
5.
6.
7.
WATER SENSOR ASSEMBLY
Unplug the TrueSTEAM.
Remove the cover with a athead or Torx screwdriver.
Disconnect the water sensor wire from the electric
circuit board.
Remove the Torx screw holding down the water sensor
assembly.
Lift the metal hinge and remove the sensor assembly
, .
Replace with the new sensor assembly and connect
the new wires to the assembly and the circuit board.
Reattach the cover.
Plug in the TrueSTEAM.
1.
2.
3.
4.
5.
6.
7.
8.
M28180
TROUBLESHOOTING
TrueSTEAM has internal diagnostics that monitor system
operation, maintenance schedules, and faults. If a system
fault is detected, the system will attempt to recover itself up to
ve times in a 24 hour period. If unable to recover in that time,
the red Call Service LED light will activate.
If the TrueSTEAM Call Service light is red, a system fault has
occurred from which the humidier can not recover by itself.
The table below shows the possible faults, along with steps to
x TrueSTEAM.
If the red Call Service LED light is on, press/release the
RESET button. The red Call Service LED light will begin
blinking in a series that indicates what fault occurred. Refer to
the table below for the fault signied by the number of blinks
that occur.
Press/hold the RESET button to clear the Service Timer light.
Press and hold the EMPTY button for 3 seconds to drain the
tank.
REPLACEMENT PARTS
Part Part Number Fig.
Reference
10-foot Remote Hose and
Nozzle Kit
50024917-001 1
20-foot Remote Hose and
Nozzle Kit
50024917-002 1
Cover 50028004-001 2
Duct Injection Nozzle for
Humidier
50028003-001 3
Remote Duct Nozzles 50028001-001 4
Mounting Bracket 50020012-001 6
Solenoid Valve 50027997-001 7
In-Line Water Filter 50028044-001 8
Sediment Screen for
Tank
50024895-001 9
HM512/HM509 Water
Tank
50020017-001 10
HM506 Water Tank 50025892-001 11
Water Level Sensor
Assembly
50027998-001 12
Wire Channel Harness 50022641-001 13
Latch 50024921-001 14
Saddle Valve 32001616-001 15
Air Pressure Switch IS30132-5972 -
TROUBLESHOOTING
No. of
Red
Light
Blinks
Fault
Description
Steps to Fix
To be Performed by Professional
HVAC Technician Only
1 Water/Heat-
er tempera-
ture sensor
failed.
• Unplug TrueSTEAM and remove
cover.
• Check water sensor connection
to electronic board.
• Reattach cover and plug
TrueSTEAM in.
• If fault reappears, press and hold
the EMPTY button for 3 seconds
and follow tank cleaning steps
in the Professional Installation
Guide (69-2036).
• Reassemble tank and press the
RESET button.
• If fault returns, replace the unit.
2 Water
sensors
failed.
• Unplug TrueSTEAM and remove
cover.
• Disconnect water level
sensor wiring, remove screw and
lift clamp.
Remove water sensor
assembly.
• Clean sensor probes using warm
soapy water so that the metal
is exposed. It is OK to use steel
wool or brush.
• Reassemble the sensor
assembly in the unit, reattach
and secure cover.
• Plug unit back in and press the
RESET button.
• If fault reappears, replace sensor
assembly.
M28182
A
B
REPLACEMENT PARTS
M28182
A
B
Continued on other side…