ALORAIR Sentinel HDi90 User manual

Sentinel HDi90
Please kindly click link below of maintenance video for your machine faults before you ship the
unit back to us. As some simple faults can be easily solved by yourself.
Sentinel HDi90 Maintenance Video:
A1:Install G3 filter
https://youtu.be/e9z_REJf2x0?list=PLblzkv3HhX7RvN3T9wR11QQvgVuOzA0D3
A3:Change the front cover
https://youtu.be/oDiJHXGueSE?list=PLblzkv3HhX7RvN3T9wR11QQvgVuOzA0D3
A6: Change the Water Pump
https://youtu.be/rczD1n2mOQA?list=PLblzkv3HhX7RvN3T9wR11QQvgVuOzA0D3
A7:Changing the humidity sensor
https://youtu.be/KEicT0NQxio?list=PLblzkv3HhX7RvN3T9wR11QQvgVuOzA0D3
A8:Changing the display board
https://youtu.be/3kXkGxZmX_g?list=PLblzkv3HhX7RvN3T9wR11QQvgVuOzA0D3
A9: Replacing the motor& fan
https://youtu.be/oGQfm_ap78s?list=PLblzkv3HhX7RvN3T9wR11QQvgVuOzA0D3
A11:Changing the main control board
https://youtu.be/cw0pXBidfJE?list=PLblzkv3HhX7RvN3T9wR11QQvgVuOzA0D3
B2: How to duct
https://youtu.be/dihUP-Y4o7A?list=PLblzkv3HhX7RvN3T9wR11QQvgVuOzA0D3
B4: How to use remote controller
https://youtu.be/tsVXjva9Gpc?list=PLblzkv3HhX7RvN3T9wR11QQvgVuOzA0D3

※
Troubleshooting
※
Symptom
Cause
Solution
Machine Won’t Run
Power Supply
Verify that there is power to the
outlet and that the plug is properly
installed in outlet
Room Temperature Over
105°F (Display HI) or Below 33°
F( Display LO)
The unit is outside the operating
temperature range. Modify the
room conditions so the temperature
is between 33°Fto 105°Fand
operation will commence.
Low Air Flow
Air Filter is Clogged
Clean the filter mesh according to
instructions listed in manual
Air Inlet or Outlet is Blocked
Clear the blockage from inlet or
outlet
Loud Noise
Machine Is Not Level
Move the dehumidifier to flat, firm
ground
Filter Mesh is Blocked
Clean the filter mesh according to
instructions listed in manual
Trouble Code: E1
E1=Humidity Sensor Issues
Check to ensure that wire is
connected at both ends. If no issues
are visible, the sensor may be faulty.
Trouble Code: E4
Pump has failed
Verify that the pump is working. If
so, unplug the unit for two minutes,
then restart
Trouble Code: HI or LO
Room Temperature Over
105°For Below 33°F
(Display LO)
The unit is outside the operating
temperature range. Modify the
room conditions so the temperature
is between 33°Fto 105°F and
operation will commence. If room is not
out of temperature range, replace faulty
sensor.

Pump Alarm- Trouble Code E2/ E4
If a pump alarm is shown on the display, complete the following steps:
1. Reset the unit by disconnecting the power cord and then reconnecting it.
NOTE: UNIT WILL NOT FUNCTION UNTIL ERROR CODE HAS BEEN CLEARED.
2. Manually check to see if pump is operational by pressing the drain button. Check if the pump
energizes and de-energizes properly. Additionally, check to see if any water purged from the
system.
3. If you haven’t cleaned the system recently, check the discharge line for an obstruction, then
clean the balance of the pump system (see “Maintenance” on page 8 for details).
4. Replace the hoses and/or pump, if maintenance alone isn’t sufficient.
Pump maintenance
1. Unscrew the 4 screws on the pump access panel.
2. Remove the screw on the pump.
3. Undo the 3 pump quick connects.
4. Insert a flathead screwdriver into the notch on the side of the pump to help you gently lift the
pump off its reservoir (the reservoir remains attached to the unit).
Cleaning/Disinfecting the Pump
Basic Cleaning ( Complete about once a year, depending on environment)
1. Remove the end cap on the filter side of the unit. Press the drain button to drain the reservoir.
2. Disconnect power to the dehumidifier.
3. Mix a 16 oz solution of either (1 oz bleach + 15 oz water) OR (4 oz white vinegar + 12 oz water).
4. Pour solution into the drain tray at the base of the coils. If any cleaning solutions gets on coils,
flush with water.
5. Allow solution to soak for 15 minutes.
6. Reconnect the dehumidifier to power.
7. Fill the reservoir and flush/cycle the pump at least two times.
8. If drain line is still filled with debris, repeat process. If still not cleaned, move on to Advanced
Cleaning.
9. Reassemble unit, unless moving on to advanced cleaning.
Advanced Cleaning(Complete as needed)
1. Press the drain button to drain the water from the reservoir (A wet-dry vacuum or towels can
be used to remove any remaining water).

2. Unplug the dehumidifier and remove the cover so you have access to the pump.
3. Remove the pump head from the reservoir by unscrewing the screw. Wipe reservoir clean
with a paper towel.
4. Mix a 16 oz solution of either (1 oz bleach + 15 oz water) OR (4 oz white vinegar+ 12 oz water).
5. Fill the pump reservoir with cleaning solution.
6. Reassemble pump, then use manual drain button to flush mixture through discharge tubing.
7. Pour same cleaning solution slowly into drain tray under evaporator coils and let it clean hose
from pan to pump. This process can be stopped when the pump energizes one time. NOTE: If you
get any of the cleaning solution on the coil, flush with water.
8. Pour sufficient clean water through drain pan to allow the pump to turn on twice.
9. Reassemble the unit and return it to operational status.