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Short test pins for longer
than 1 second but less
than 2.0 seconds
Clear any short cycle lockout
and 5 strike pressure fault
lockout function, if applicable.
No other functions will be
executed and unit will
continue in the mode it was
operating.
Test pin short REMAINS in place for more than 5 seconds
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.
Test Mode
Y1 Active ( 0" line inactive)
Short test pins for more than 2.0 seconds
Clear any short cycle lockout or 5 strike
If in COOLING Mode
No further test mode
operation will be
ambient and coil faults (open or
executed until the test
short is removed and
unit will remain in Heat Mode
reapplied.
operation will be executed until
the test short is removed and re
unit will go into Defrost mode.
FIGURE 16
Page 12
pressure fault lockout function.
If in HEATING Mode
The controller will check for
shorted). If a fault exists, the
and no further test mode
applied. If no fault exists, the
Test pins short REMOVED before a
maximum of 5 seconds
The unit will remain in Defrost mode
until termination on time or temperature
If in 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.
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