Page 8
If in
COOLING
Mode
If in
HEATING
Mode
If in
DEFROST
Mode
Short test pins for longer
than 1
second but
less than
2 seconds
Short test pins for
more than 2 seconds
Y1 Active (0" line inactive)
Test pin short REMAINS in place for more than 5 seconds
Test pins short REMOVED before a
maximum of 5 seconds
Clear any short cycle lockout
and 5 strike fault lockout
function, if applicable. No
other functions will be
executed and unit will
continue in the mode it was
operating.
No further test mode
operation will be
executed until the test
short is removed and
reapplied.
The control will check for ambient
and coil faults (open or shorted).
If a fault exists, the unit will
remain in Heat Mode and no
further test mode operation will
be executed until the test short is
removed and re applied. If
no fault exists and ambient
temperature is below 35ºF, the
unit will go into Defrost mode.
The unit will terminate
defrost and enter Heat
Mode uncalibrated with
defrost timer set for 34
minute test. No further
test mode operation will
be executed until the test
short is removed and
reapplied.
Clear any short cycle lockout and 5 strike
fault lockout function, if applicable.
The unit will return to Heat mode uncalibrated with defrost
timer set for 34 minutes. No further test mode operation will
be executed until the test short is removed and re applied.
The unit will remain in Defrost mode
until termination on time or temperature
FIGURE 7
