Williamson-Thermoflo 9SRA-HE User manual

M00035-V00
R-410A
This system uses

Owner’s manual
IMPORTANT!
CAUTION:
This symbol refers to a hazard or unsafe practice, which can result in personal injury and the potential
for product or property damage.
NOTE:
Installer - Please take time to review this owner’s manual with the owner. Explain all maintenance, setup and
service procedures.

Owner’s manual
CONTENTS
1_Introduction 1
2_Safety precautions 2
3_Remote control buttons and display 3
4_Led display functions 4
5_Installing remote control batteries 5
6_Setting the clock 6
7_Automatic mode 7
8_Cooling mode 8
9_Dehumidifying mode 9
10_Fan mode 10
11_Setting the timer 11
12_Sleep mode 12
13_Adjusting the airflow direction 13
14_Setting the fan speed 14
15_Cleaning 15
16_Auxiliary control 16
17_Troubleshooting 17_18
18_Tips for saving energy 19

Owner’s manual _1
1_ INTRODUCTION
For future reference, we suggest you attach a copy of your sales slip/receipt to this page, along with the following
information which is located on the manufacturer’s nameplate located on the side of the unit. You will be asked this infor-
mation if your unit requires servicing and/or for general inquiries.
Model number
Indoor unit:
Outdoor unit:
Serial number
Indoor unit:
Outdoor unit:
Date of purchase:
Date of installation:
Dealer’s Name and Address:

Carefully read these safety precautions before using your air conditioner.
These precautions must be taken at all times.
Keep this document for future reference.
- Unit must be supervised in presence of children or anybody unfamiliar with it.
- Do not hang or place any clothing or other objects on the unit.
- Do not place any obstacles in front of the unit.
- This device must be installed according to the national electrical code or any other state codes or regulations.
- Never spill any liquid into the indoor unit. If this should accidentally happen, turn off the electrical circuit breaker used
for your air conditioner and contact your installation specialist.
- Do not insert anything between the airflow blades to avoid any damage to the inner fan and to avoid possible harm.
- If the remote control is not used for a long period of time, remove the batteries to prevent leakage of electrolyte.
- Any damaged electrical component should be replaced by a qualified installer / service technician.
- Users of this appliance are warned NOT TO ATTEMPT ANY REPAIRS on this product, doing so is at their own risk.
Instead, they are requested to contact a qualified installer / service technician.
Owner’s manual _2
2. SAFETY PRECAUTIONS
CAUTION:
The manufacturer does not take any responsibility for any damage or injuries caused by inadequate installation.
An accident may occur if the installation is not executed as instructed in the installation manual. If you experience
any difficulty, contact a qualified installer / service technician.

Farenheit °F/Celsius °C
press °F/°C button to select the
desired temperature scale.
Owner’s manual _3
3. REMOTE CONTROL BUTTONS AND DISPLAY
1. Operating mode setting display
2. Fan speed display
3. Temperature display
4. Airflow sweep icon
5. Clock and timer display
6. On/Off button
7. Temperature adjustment buttons
8. Mode button (auto, cooling, dehumidifying)
9. °F/°C switch button
10. Fan speed adjustment button
11. Airflow sweep button
12. Clock button
13. Sleep button
14. Timer setting buttons
15. Clock setting buttons
16. Reset button
When operating the air conditioner, point the remote control toward
the signal receiver on the air conditioner and the operation should be
confirmed by a beep sound and icon display.
Note:
• The remote control works within a distance of 23 ft. (7 m) and at a
maximum angle of 30 degrees.
• Dust, high temperatures and strong vibrations must be avoided.
To open the
back cover
1
2
5
6
8
10
12
14
15
16
11
4
3
7
9
13

88
POWER OPERATING TIMER/SLEEP
Power Indicator (Red)
Operating Indicator (Blue)
Timer/Sleep Indicator (Yellow)
LED display 9 000-12 000 BTU
LED display 15 000-18000-24 000 BTU
Power indicator (Red)
Operating indicator (Blue)
Timer/Sleep indicator (Yellow)
This display screen shows:
- the selected temperature for 3 seconds
before the screen becomes blank again;
- The trouble indicator code.
Owner’s manual _4
4_ LED DISPLAY FUNCTIONS

1. Push the battery cover (on the rear of the remote control) with your thumb in the direction of the arrow and remove it.
2. Insert the two batteries by respecting the polarities indicated.
3. Close the cover by sliding it back until it clicks into place.
CAUTION:
In replacement of batteries:
• Do not use old batteries or different kinds of batteries together.
• Use two AAA, 1.5V alkaline batteries.
• If you do not expect to use the remote control for a long period of time, remove the batteries to prevent leakage
of electrolyte.
Owner’s manual _5
5_ INSTALLING THE REMOTE CONTROL BATTERIES

Owner’s manual _6
6_ SETTING THE CLOCK
Clock button
Clock setting buttons
Clock display
1- Press the CLOCK button on the remote control.
2- Press the CLOCK setting buttons to set the time.
3- Press the CLOCK button again.

In automatic mode, the air conditioner will operate in dehumidifying
mode when the room temperature is below 77 °F (25 °C) and in
cooling mode when it is above 77 °F (25 °C). These temperature are
preset and cannot be modified.
In this mode, you can set the following :
- fan speed (low, med, high, auto)
- airflow direction.
To operate:
1. Press the ON/OFF button on the remote control to start the air
conditioner.
2. Press the MODE button repeatedly until the automatic mode icon
( ) is displayed in the upper left corner of the remote control.
Mode
button
Automatic mode icon
Owner’s manual _7
7_ AUTOMATIC MODE

CAUTION:
Set a reasonable temperature to avoid discomfort from overcooling.
Cooling mode icon
Mode
button
Fan speed
adjustment
button
Temperature
adjustment
buttons
Airflow
directional
button
Airflow
sweep
button
In cooling mode, you can adjust the following :
- temperature
- fan speed (low, medium, high, automatic)
- airflow direction
1. Press the ON/OFF button to start the air conditioner.
2. Press the MODE button repeatedly until the cooling mode icon
( ) is displayed in the upper left corner of the remote control.
3. Press the fan speed adjustment button ( ) and select the desired
speed (low, med, high, auto).
4. To adjust the temperature, press the WARMER/COOLER buttons
until the targeted temperature is displayed. The available temperature
range is between 61 °F (16 °C) and 87 °F (31 °C).
- Each time you press a WARMER/COOLER button, the temperature
is adjusted by 1 °F or 1 °C.
5. The air conditioner starts cooling, provided that the room
temperature is higher than the selected target temperature.
Note:
- If the room temperature is lower than 61 °F (16 °C), the air conditioner
will not allow the compressor to operate in cooling mode.
- If the room temperature is too low and the room humidity is too
high, frost or ice can form on the surface of the evaporator.
However, the air conditioner is pre-adjusted to protect itself against it.
Whenever the evaporator temperature drops below 30 °F (-1 °C), the
outdoor unit will stop running until the evaporator temperature
increases to 45 °F (7 °C).
Owner’s manual _8
8_ COOLING MODE

CAUTION:
In cooling and dehumidifying modes, if the compressor cycle is interrupted (due to unplugging, power failure,
etc.), a protection circuit is automatically activated, preventing the compressor from operating. This is no cause
for alarm, but the protection circuit may need 3-5 minutes to reset.
Dehumidifying mode icon
Mode button
In dehumidifying mode,
- When the room temperature is below 59 °C (15 °C), this
function is not available.
- When the room temperature is between 59 and 72 °F (15 and
22 °C), the compressor will automatically run at regular
intervals of 6 minutes ON and 10 minutes OFF.
- When the room temperature is between 72 and 82 °F (22 and
28 °C), the compressor will automatically run at regular
intervals of 6 minutes ON and 6 minutes OFF.
- When the room temperature is above 82 °F (28 °C), the
compressor will automatically run at regular intervals of 10
minutes ON and 4 minutes OFF.
In this mode, the temperature and the fan speed cannot be
adjusted. The fan will automatically run at low speed.
1. Press the ON/OFF button to start the air conditioner.
2. Press the MODE button repeatedly until the dehumidifying
mode icon ( ) is displayed in the upper left corner of the
remote control.
Owner’s manual _9
9_ DEHUMIDIFYING MODE

The fan mode is used to circulate the air throughout the room.
1. Press the ON/OFF button to start the air conditioner.
2. Press the mode button repeatedly until the fan mode icon ( ) is
displayed in the upper left corner of the remote control.
3. To adjust the fan speed, press repeatedly on the fan speed adjustment
button ( ) until the target velocity is reached (low-med-high-auto).
Note:
The cooling mode and the fan mode cannot operate simultaneously.
Fan mode icon
Mode button
Fan speed
adjustment
button
Owner’s manual _10
10_ FAN MODE

Before setting the timer, you have to be sure that the remote control’s clock is correctly set. This function offers you a choice
of three different timer program options. The programming period is based on a minimum time range of 10 minutes and a
maximum time range of 24 hours. These programs have to be set daily and are automatically cancelled when they expire.
The 3 options are :
Program #1: Setting the ON timer and OFF timer
This option enables you to program the unit to automatically start operating and shut down at specified times within a
maximum range of 24 hours.
1. Press the ON timer button. ( | )
2. Press the clock setting buttons (HR and MIN) to set the time you want the unit to start running.
3. Press the OFF timer button. ( )
4. Press the clock setting buttons (HR and MIN) to set the time you want the unit to stop running.
5. You have to set all possible adjustments (mode, temperature, fan speed, airflow).
6. The program is confirmed by the illumination of the yellow LED display in the center of the unit and the display of the timer set-
tings on the remote control.
Program #2: Setting the ON timer only
This option enables you to program the unit to automatically start running at a specified time within a maximum time range of
24 hours.
1. Press the ON timer button. ( | )
2. Press the clock setting buttons (HR and MIN) to set the time you want the unit to start running.
3. You have to set all possible adjustments (mode, temperature, fan speed, airflow).
4. The program is confirmed by the illumination of the yellow LED display in the center of the unit and the display of the timer set-
tings on the remote control.
Program #3: Setting the OFF timer only
This option enables you to program the unit to automatically shut down at a specified time within a maximum time range of 24 hours.
1. Press the OFF timer button. ( )
2. Press the clock setting buttons (HR and MIN) to set the time you want the unit to shut down.
3. The program is confirmed by the illumination of the yellow LED display in the center of the unit and the display of the timer
settings on the remote control.
To cancel a timer setting, simply press on the ON timer button ( | ) and/or on the OFF timer button ( ) according to the
program you chose. The yellow LED display in the center of the unit will turn off. On the remote control, the timer settings
disappear and the clock displays.
ON timer button OFF timer button
Clock and
timer display
Yellow led display
Yellow led display
15 000-18 000-24 000 BTU
Owner’s manual _11
11. SETTING THE TIMER
88
9 000-12 000 BTU

In sleep mode, the air conditioner will first attain the desired target temperature. Then, it will allow the temperature to rise
2 °F (1 °C) higher than the target temperature for every hour for up to two hours (4 °F – 2 °C). The unit will automatically
stop working after another 6 hours of continuous running. This means the air conditioner will run less often, therefore will
be quieter.
1. Press the sleep button ( ) .
2. To cancel this mode, press the sleep button ( ) again.
Sleep button
Sleep mode icon
Owner’s manual _12
12_ SLEEP MODE

Owner’s manual _13
13_ ADJUSTING THE AIRFLOW DIRECTION
Airflow sweep icon
Adjusting the vertical airflow
If you want the outer blades to move up and down automatically when the air conditioner is operating, press the SWEEP
button ( ) on the remote control or on the unit’s control panel. Press the SWEEP button ( ) again when the blades
are at any position that you desire and they will remain in that position.
Airflow sweep button

Press the fan speed adjustment button ( ) repeatedly until the required setting is displayed:
LOW
MEDIUM
HIGH
AUTOMATIC
(The air conditioner will automatically set the fan speed to obtain the target temperature.)
Fan speed button
Owner’s manual _14
14_ SETTING THE FAN DISPLAY

IMPORTANT
- Before cleaning your air conditioner, make sure that you have turned off the electric circuit breaker.
- To obtain the best possible results from your air conditioner, clean it regularly, removing any dust that has accumulated in
the air filters or on the condenser coils.
- If you have not used the air conditioner for a long period of time, run the fan for 3 or 4 hours to thoroughly dry the inside
of the air conditioner.
- Do not clean the unit’s surface with thinners, alcohol, polishers, alkaline detergents, acid, or an abrasive brush. Such
items could scratch and damage the finish.
To clean the air filters
1. Open the front grid by lifting the tabs on the lower right and left sides of the unit. Raise the front grid until it snaps tight
in an open position.
2. Remove the air filters.
3. Remove all dust from the air filters with a vacuum cleaner or a soft brush, or wash them with warm water. (Do not use
benzene, solvents, or other chemicals.)
4. When you have finished, put the air filters back into the unit and close the front grid.
Note:
Failure to keep air filters clean will result in poor air circulation. Do not operate the air conditioner without its filters. Dirt
and lint will clog the evaporator surface, reduce airflow, and possibly cause ice to form, reducing the unit’s cooling capacity.
Owner’s manual _15
15_ CLEANING

If the remote control is lost or inactive, you may use the auxiliary control to switch the air conditioner on.
(Lift the front cover of the indoor unit to locate the auxiliary control button.)
Press once to activate the cooling mode, press once again to deactivate.
When the unit is activated by the auxiliary control, it will run in cooling mode and the fan speed is set at high. The air
conditioner will change fan speed to medium speed and set the temperature automatically at 75 °F (24 °C) after 30
minutes of continuous operation.
Auxiliary control button
Press once
Stop
Cooling
Press once
15 000-18 000-24 000 BTU
9 000-12 000 BTU
Auxiliary control button
Owner’s manual _16
16_ AUXILIARY CONTROL

Problem Cause Solution
The unit does not work at all.
Cooling performance is poor.
The unit is operating, but the air
remains warm.
The compressor stops running
after a short time.
The unit is making unusual noises.
The unit is working, but the room
is still not cool enough.
The evaporator fan is noisy.
The condenser fan is noisy.
The air conditioner does not
operate with the remote control.
The ON timer is activated.
There is no power at the unit.
The wrong function mode was
selected.
There is an obstacle in front of
the unit.
The air filters are dirty.
The compressor is not yet operating.
The temperature is incorrectly set.
There is not enough voltage.
The unit is not leveled.
The room’s BTU demand is greater
than the unit’s capacity.
Cross flow fan is not well
balanced.
The fan is rubbing against the
plastic housing.
There is an obstacle between the
remote control and the signal
receiver.
The batteries are weak.
You are too far from the unit.
Cancel the timer.
Check the fuses and the circuit
breaker.
Select the correct function
mode. (auto, cooling)
Clear all obstacles.
Clean filters.
Wait 3-5 minutes for the
compressor protection circuit to
turn off.
Adjust the temperature setting.
Unplug other appliances that
may overload the electrical
circuit breaker.
Place the unit on a leveled surface.
The room needs a greater
cooling capacity: add another
unit or upgrade to a unit with
greater BTU capacity.
The unit needs to be repaired, or
parts must be replaced.
The unit needs to be repaired, or
parts must be replaced.
Make sure the signal path is clear.
Replace the batteries.
Get closer. (Within 23 ft.-7 m).
Before contacting the after-sale service, perform the following simple checks. They may save you the time and
expense of an unnecessary call.
CAUTION:
Have repairs performed by a certified HVAC technician.
Owner’s manual _17
17_ TROUBLESHOOTING