Sanuvox SRMax Programming manual

Troubleshooting manual
for
Sanuvox SRMax Air Purifier
WARNING
Before servicing the unit, TURN OFF and disconnect unit from power source. Electrical shock may
cause personal injuries or death.
Sanuvox Technologies, Montreal (Canada)
www.sanuvox.com
July 2018
Contents
1. Tools required for troubleshooting............................................................................................................................. 1
2. Identifying internal components inside SRMax..................................................................................................... 1
3. List of parts for replacement.......................................................................................................................................... 2
4. Troubleshooting summary table.................................................................................................................................. 3
5. Step-by-step instructions ................................................................................................................................................ 4
5.1 Open the SRMax ballast box.................................................................................................................................... 4
5.2 Test UV lamp continuity........................................................................................................................................... 4
5.3 By-pass circuit board (test ballast and UV lamp together)........................................................................ 5
5.4 By-pass thermistor ..................................................................................................................................................... 6
5.5 Resetting lamp timer ................................................................................................................................................. 6

1
1. Tools required for troubleshooting
-Phillip screwdriver
-Ohmmeter
-5/16” nutdriver
2. Identifying internal components inside SRMax
To access internal components of the SRMax, remove cover by following the Step-by-step
instructions.
Circuit board
Reset button
Circuit board to
ballast connection
Ballast to lamp
connection
Ballast
Thermistor

2
3. List of parts for replacement
Sanuvox PN
Description
BST120/240GL
Ballast
MSCELC20-1
Circuit board
MSCTER2
Thermistor
LMPRGXJ65
6.5in regular intensity
UV lamp

3
4. Troubleshooting summary table
Problem
Possible causes
Try …
On/Off button
internal LED is
not lit
-There is no power to the
electrical outlet
-The On/Off button is not
pressed ON
-Power cord is damaged
-Circuit board is damaged or
defective
-Test the outlet to make sure there is
power by plugging in another
electrical appliance
-Press the switch to the ON position
-Check the power cord for damage
and replace if damaged (contact
Sanuvox)
-Visually inspect the circuit board and
look for damage/burn marks
-Contact Sanuvox to replace circuit
board and thermistor together
Status LED is
Orange
-The lamp has reached its 3 year
lifespan
-Get a genuine replacement lamp and
reset the counter to 3 years (refer to
reset procedure)
Status LED is Red
with 2 flashes
-Connection issues between the
lamp and the ballast
-Connection issues between the
ballast and circuit board (power
supply)
-Defective lamp
-Defective ballast
-Verify that the connections between
lamp and ballast (also ballast and
circuit board) are secured
-Test lamp continuity (refer to lamp
test procedure)
-Contact Sanuvox to replace UV lamp
-Contact Sanuvox to replace ballast
Status LED is Red
with 3 flashes
-Thermistor is not connected
-Thermistor is damaged or
defective
-Check thermistor connections
-Contact Sanuvox to replace
thermistor
Status LED is Red
with 4 flashes
-Thermistor is shorted
-Contact Sanuvox to replace
thermistor
Status LED is Blue
with heartbeat
-Airflow detection activated,
waiting for airflow
-Change the fan setting for higher
speed
-Reposition the SRMax in the
ductwork where the airflow is
unobstructed
-By-pass the thermistor (refer to
thermistor by-pass procedure)
Status LED is
blank
-Start-up not completed
-Defective LED
-Wait 5-10 seconds for start-up to
complete
-Contact Sanuvox to replace LED
Lamp burned
before the 3 years
elapsed
-Over cycling of the UV lamp due
to excessive start/stop of the
variable speed fan
-Contact Sanuvox to replace lamp and
by-pass thermistor (refer to
thermistor by-pass procedure)

4
5. Step-by-step instructions
WARNING
Before performing any of the instructions below, make sure the unit is turned OFF
and unplugged from power.
5.1 Open the SRMax ballast box
Step
1. Take the SRMax out from the ductwork by
removing the 4 screws located on the cover (4
corners) that hold it to the frame
2. Place the SRMax down on a flat surface,
remove the 4 screws that attach the cover to
the ballast box and pull the cover off
5.2 Test UV lamp continuity
Step
1. Take the SRMax out from the ductwork by
removing the 4 screws located on the cover (4
corners) that hold it to the frame

5
2. Take the reflector off by removing the 4
screws that hold it to the ballast box and
remove the lamp connector from the lamp
3. Using an ohmmeter place 1 probe on 1 of the
4 pins and by sensing the 3 remaining pins, 1
should have continuity. Make sure the 2
remaining pins also have continuity.
5.3 By-pass circuit board (test ballast and UV lamp together)
Step
1. Open the SRMax ballast box
Refer to instructions above
2. Unplug from the circuit board the line
(black) from the power cord. See picture to the
left.
Insert black wire from the power cord into
connector identified “Bypass”. See picture to
the right.
3. Place the unit on the ground and make sure
that you don’t have direct line of sight with the
lamp. Plug the power cord directly in a power
outlet and the UV lamp will light up if both the
UV lamp and ballast are still functional.

6
4. After the test is completed, unplug the unit
and replace the black wire from the cord in its
original position (Line).
5.4 By-pass thermistor
Step
1. Open the SRMax ballast box
Refer to instructions above
2. Plug in the SRMax to a power source and
turn ON the unit by pressing the power button.
In the first 5 seconds from powering the unit
ON, click the Reset button once. By doing so,
you’ll see the status LED turn Blue meaning the
airflow detection is activated. By clicking again
within 5 seconds, LED will turn White meaning
that airflow detection is deactivated.
5.5 Resetting lamp timer
Step
1. Open the SRMax ballast box
Refer to instructions above
2. Plug in the SRMax to a power source, press
the switch to the ON position and wait 10
seconds before next step.
3. Press and hold the reset button for 3
seconds until the counter sets itself back to
1096days (3 years)