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heat should shut off when the wires are separated.
For more complex troubleshooting of either thermal cutouts or
heater contactors, please consult a qualified electrician or the
factory.
Q. Why didn’t the Intelliswitch™ save the changes I made to
a program?
A.
If a program is active (a dot is illuminated by one of the
clock digits), changes can be made to any settings on the User
Menu. These changes however will only remain in effect until
the program changes to the next time zone. To make changes
permanent, settings must be changed in the program from the
Program Menu. Access the Program Menu by holding down the
left arrow for 5 seconds until “PRO” is displayed. Arrow down
to select programming and arrow left to select the program to
edit. Use the down arrow to step through the options and make
changes as desired. Continue to press the down arrow until Stor
is displayed. Press OK or down to keep or store the changes.
Q. How do I undo a change that I made to a program in the
Program Menu?
A.
Changes to programs cannot be undone. The programs can
however be reset to the factory default settings. This must be
done on the Factory Menu. Access to the Factory Menu is at-
tained through the Diagnostics Menu. Press and hold the right
arrow for 5 seconds until “DIAG” is displayed. From the “DIAG”
display press and hold the up and down simultaneously for 10
seconds until “FACT” is displayed. Use the down arrow to select
“DEFn” on the display then use the right arrow to select “DEFP”.
Press “OK” to reset. The control display will go blank then blink
as confirmation.
Q. My air curtain won’t turn on?
A.
Check the AM/PM setting on the Start and Stop times or the
clock (considering the AM indicator light whensetting values).
Note: set the start time and stop time to the exact time for the
unit to be active full time. Check to see if a program is active
that may have different start/stop times than those expected.
Q. My building has a Building Management System, can the
Intelliswitch work with a BMS?
A.
The Intelliswitch can be controlled by a Building Manage-
ment System (BMS) but currently does not have the ability to
communicate with them. Dry contacts on the BMS may be used
to control the unit activation through the door switch connec-
tions (blue wires 9 & 10) and the heat activation thought the
remote thermostat connections (orange wires 6 & 7). Consult
factory.
any mode that is activated by the door switch.
5.) If the air curtain is heated, make sure that the thermostat
isn’t wired to the door switch leads. Door switch leads are blue
and labeled 9 & 10.
Q. How can I check the door switch to be sure it’s working?
A.
The Intelliswitch™ may be in the wrong mode, be mis-wired
or have a faulty door switch.
1.) Test the wiring and controller function at the same time first.
Locate the door switch and open its wiring compartment by re-
moving the two screws holding on the back cover. There should
be two wires connected to screws inside the switch. There is no
danger of getting shocked because the signal is 5 volt dc. Be
sure not to touch the wires to anything metal (or grounded).
Either disconnect both wires from the screws (noting which
screws the wires are under) and touch them together (with air
curtain in “Auto” mode) or make a short jumper wire and touch
the jumper to both screws at the same time to see if air curtain
comes on. If it does, the controller and wiring work.
2.) If the wiring and unit pass the function test, the problem
could be either misalignment or a faulty door switch. On a
magnetic reed switch check for magnet alignment, for plunger/
roller type switch, check contact engagement with door.
3.) If you have access to an electrical test meter, the door switch
contacts can be tested for continuity when the door switch
wires are disconnected from the unit.
Q. Why won’t my heat shut off?
A.
The Intelliswitch may need adjusted, have been mis-wired or
have a faulty thermostat.
1.) Heat is activated by one of two thermostat connections.
To test the internal thermostat set the external thermostat to
OFF. The settings of the unit mounted thermostat probe are
accessed through the display. Press the down arrow until the
Temp Set indicator lights up; check if the temperature setting
and unit of measure are correct. Test to see if it shuts off by set-
ting the thermostat temperature to OFF or lower than the room
temperature.
2.) If an external thermostat is connected to the unit, there
could be a short in the field connections or the thermostat
leads may be mis-wired. To test the external thermostat set the
internal thermostat to OFF. Disconnect the external thermostat
connections at the unit. Open the wiring tray on top of the unit
and be cautious of high voltage connections. Disconnect the
orange wires labeled 6 & 7 from the field wiring to the thermo-
stat or make sure they are not tied together. There is no danger
of getting shocked because the signal is 5 volt dc. Be sure not
to touch the orange wires to anything metal (or grounded). The
INTELLISWITCH™ FAQ’s Continued (Frequently Asked Questions)
www.Berner.com/intelliswitch
