Human Touch ThermoStretch HT-7120 User manual

©2008 Human Touch, LLC. All rights reserved.
August 28, 2008
Please forward any questions or comments regarding this Troubleshooting Guide to
[email protected].

HT-7120 Troubleshooting Guide 1
HT-7120 Troubleshooting
This Troubleshooting Guide walks you step-by-step through the
diagnosis of HT-7120 customer problems. It is important to follow
these steps carefully, to ensure that the problem is diagnosed
correctly, and therefore the appropriate repair action is taken.
Getting Started
1. Turn the power switch on the back of the chair to Off, wait
approximately five seconds, then turn it back On. Verify that the
problem still exists.
2. If there is no movement on the chair when you power it on (the
backrest massage mechanism and the foot and calf massager
paddles do not move), see "Power" on page 3.
3. Wait 30 seconds while a system check is performed, then check
to see if any of the following are true:
• The Rolling LED is flashing—This means the elevation motor is
not operating correctly. Replace the massage mechanism.
• The Width lights are flashing—This means the kneading motor
is not operating correctly. Replace the massage mechanism.
• The foot and calf massager paddles did not move during the
system check and the foot and calf massager LEDs on the
remote control are all flashing—This means the foot and calf
massager motor is not operating correctly. Replace the foot and
calf massager.

2HT-7120 Troubleshooting Guide
• The foot and calf massager paddles moved during the system
check but then all foot and calf massager LEDs on the remote
control began flashing and/or the two end Width LEDs on the foot
and calf massager began blinking—This means that either the
foot and calf massager motor sensor is not operating correctly or
there is a broken wire connecting the foot and calf massager to
the backrest. Replace the foot and calf massager.
4. Choose from the following:
To Troubleshoot This
Issue Do the following:
My remote control is
not working
If one or more remote control LEDs do not light,
but the function the button controls works
properly, the remote control is not working
properly. Verify that the remote control cable
connection to the backrest cover is secure.
Replace the remote.
If the remote control LED lights but the function it
controls is not working properly, the problem is
most likely in one of the components controlled
by the remote, not in the remote itself. See
"Massage Functions" on page 4 for further
diagnosis.
My chair is not
massaging properly
See "Massage Functions" on page 4.
My foot and calf
massager is not
working
See "Foot and Calf Massager" on page 5.
My chair won’t
recline/incline
Make sure you are pressing and holding the
recline/incline button for at least five seconds; it
can take several seconds to activate the actuator.
If this does not help, the backrest actuator is not
working properly. Replace the backrest actuator.
My Massage/Comfort
control isn’t working
Place your hand on the front left or right side of
the backrest while adjusting the Massage
Comfort Control. If the air bags are not inflating or
deflating, check the tubing that connects the air
pump to the backrest for kinks. If there is a kink,
cut the kinked portion of the tubing off, then
reconnect the tubing to the fitting. If this does not
solve the problem, the air pump is not working.
Replace the air pump.

HT-7120 Troubleshooting Guide 3
Power
Step 1: Check the power cord
Verify that the power cord connection to the power panel is secure, and
that the cord is not damaged. If the power cord is damaged, replace the
backrest cover.
IMPORTANT
Be sure to note the serial number on the power panel, and
instruct the customer to note it as well. Once the power panel is
replaced, the chair will no longer contain the serial number on
the power panel.
Step 2: Check the wall outlet
Plug a different device into the AC outlet into which the chair is plugged.
If the device does not work (is not receiving power), the AC outlet is
most likely not working. Plug the chair into a different AC outlet to verify
that it receives power.
Step 3: Replace the AC Outlet Fuse
The AC outlet fuse is the right of the two fuses, located on the power
panel.
To replace the fuse:
1. Turn the power switch to OFF and unplug the chair from the wall
outlet.
2. Using a small screwdriver or a coin, turn the fuse holder (located on
the power panel) approximately 1/8 turn counter-clockwise.
The fuse holder pops out.
3. Replace it with a new fuse of the same rating.
My chair won’t swivel
or the pedestal is
broken.
Replace the chair.
My convenience outlet
doesn’t work.
See "Convenience Outlet" on page 6.
To Troubleshoot This
Issue Do the following:

4HT-7120 Troubleshooting Guide
4. Reinsert the fuse holder into the power panel, then turn it 1/8 turn
clockwise to secure it.
5. Plug the chair back into the wall outlet and turn it on.
6. Verify that the chair is now receiving power.
Step 4: Replace the main PCB
An electrical surge may have bypassed the fuse and damaged the main
PCB. Replace the main PCB. If this does not solve the problem, there is
likely a pinched wire in the backrest. Replace the backrest.
IMPORTANT
If you replace the backrest, be sure to note the serial number
on the backrest cover. Once the backrest is replaced, the chair
will no longer contain the serial number.
Massage Functions
Follow the steps in this section to troubleshoot massage functions that
are not working properly.
1. Choose from the following:
To Troubleshoot This
Issue: Do the Following:
My Percussion/
Compression massage
is not working
If the Percussion and Compression massages are
not working, and the Width LEDs are flashing, the
percussion motor is not working properly.
Replace the massage mechanism.
If one massage roller is protruding further from
the backrest than the other roller, or the massage
rollers feel “wobbly,” the massage mechanism
was likely damaged during shipping. Replace the
massage mechanism.
My Kneading massage
is not working
Press the Kneading button on the remote control.
If the kneading massage works for approximately
30 seconds then stops, the kneading motor
sensor is not working properly. Replace the
massage mechanism.
My Rolling button is
not working
Press the Rolling button on the remote control. If
the rolling massage works for approximately 30
seconds then stops, the rolling motor sensor is
not working properly. Replace the massage
mechanism.

HT-7120 Troubleshooting Guide 5
Heater
Follow the steps in this section if the heater is not working, but all other
chair functions are working properly.
IMPORTANT
The heater heats slowly, taking at least five minutes to warm
up.
1. Press the Heat button on the remote control.
2. Watch the remote control timer until it counts down at least five
minutes.
3. Check the left and right sides of the backrest to determine if either
side feels warm.
4. If either side does not feel warm, replace the backrest.
Foot and Calf Massager
The foot and calf massager hesitates when changing
directions:
This is due to the gears shifting, and is perfectly normal.
The foot and calf massager width adjustment does not
seem to be working:
The foot and calf massager width adjustment is subtle; therefore the
difference between the settings may not be visually noticeable.
You must press and hold the width buttons to adjust the width setting.
Some LEDs may not light as the width is adjusted to the new setting,
however when you release the width button the LEDs indicate the
current setting.
My Heat button
doesn’t work
Go to "Heater" on page 5.
My Stretch button is
not working.
Make sure you are pressing and holding the
Stretch button until the chair beeps twice (it
takes several seconds for the chair to prepare for
the Stretch function).
To Troubleshoot This
Issue: Do the Following:

6HT-7120 Troubleshooting Guide
The foot and calf massager will not deploy or retract:
1. Make sure the electric footrest lever is being pulled up or pushed
down long enough for the foot and calf massager to shift into gear (it
takes a few seconds).
2. Pull up and then push down on the electric footrest lever, located on
the right-hand side of the chair, and listen carefully for a clicking
sound.
3. Do one of the following:
• If you do not hear a clicking sound, the electric footrest switch
has failed. Replace the footrest lever.
• If you hear a clicking sound and the foot and calf massager
actuator is not making any sound, the foot and calf massage
actuator is not working properly. Replace the foot and calf
massager actuator.
• If you hear a clicking sound and the foot and calf massager
actuator is making a humming sound, the foot and calf massager
bracket may have been pushed up into the chair seat. This can
be corrected by removing the foot and calf actuator, allowing the
bracket to swing down into the proper position, then reinstalling
the actuator. See repair instruction sheet “Replacing the Foot
and Calf Massager Actuator” for instructions. If this procedure
does not resolve the problem, replace the foot and calf massager
actuator.
Convenience Outlet
NOTE
This section pertains to 120-volt products only; 230-volt
products do not contain convenience outlets.
The convenience outlet fuse is the left of the two fuses, located on the
bottom of the power panel.
1. Verify that the device being plugged into the convenience outlet
does not draw more than 1 Amp of power. (If it does, it cannot be
plugged into the convenience outlet as it will blow the fuse).
2. Verify that the device being plugged into the convenience outlet
works when plugged into a wall outlet.
3. Turn the power switch to OFF and unplug the chair from the wall
outlet.

HT-7120 Troubleshooting Guide 7
4. Using a small screwdriver or a coin, turn the fuse holder (located on
the power panel) approximately 1/8 turn counter-clockwise.
The fuse holder pops out.
5. Replace the fuse with a new fuse of the same value.
6. Reinsert the fuse holder into the power panel, then turn it 1/8 turn
clockwise to secure it.
7. Plug the chair back into the wall outlet and turn it on.
8. If the convenience outlet is still not receiving power, replace the
backrest cover.

Human Touch, LLC
3030 Walnut Ave.
Long Beach, CA 90807
humantouch.com