Model 200DX
::
Ultimateair.com
::
Athens, Ohio 45701 :: 740.594.2277
Troubleshooting Model 200DX ERV
Tech Support 740.594.2277 or email [email protected]
Problem
Possible Cause
Recommended Solution
Power switch mounted on
machine is Off…………
Check that Main 110VAC switch
Green Light on Wall
Dial Control does
not come on
Accessories connected to
the unit are not powered
or wired correctly
Use a jump wire from LINE 24V on
the Main Board mounted inside the
power switch cover to the boost
BST terminal on the same board to
see if machine responds by running
at full flow. The problem may be in
the Wall Dial if Boost works
correctly.
Blown fuse………
Check and replace the main fuse. ¼
amp
Verify all connections and replace
any loose wiring
At least 100 VAC may not
be reaching the machine
Make sure that NA/EURO jumper is
in the correct position on main
board
Wires from the Main
Control Board to the wall
Dial may be crossed,
Notice order of wire labels
Green Light on Wall
Dial Flashing
Auto Frost Protection
shuts Off Machine below
10° F (-12C)
-Temperature Probe
Problem. Machine
electrically Tied To
Furnace and is currently
not Running
Wait for outside temperatures to
rise above 10° F or Purchase an
efficient UltimateAir pre-heater for
operation below 10° F (-12C)
