8/8/2014
VECTOR COMPACT
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not lit.
bent, or broken pins).
connector or entire display cable.
PASSPORT II DIGITAL CONTROL TROUBLESHOOTING GUIDELINES CONT.
FAULT
POSSIBLE REASON
CORRECTION
Fan is not
running.
Passport II is programmed for
fan cycling with compressor.
Reprogram parameter U10.
Fan runs
continuously.
Passport II is programmed for
continuous fan operation.
Reprogram parameter U10.
No cooling or
heating.
Passport II programmed for heat
or cool only.
Reprogram parameter U1 for appropriate mode:
cooling, heating or auto.
"HHH" or "PPP" is displayed on
Passport II panel.
See below.
No heat.
Electric heat option not operating
properly with Passport II.
The Passport II circuit board has a 6 amp relay for
reverse cycle, if electric heat is installed, a
contactor must be used to carry the heater current.
Check wiring and see programmable parameter
U11.
Unit switches
to heat while in
cool mode.
Passport II de-icing feature
enabled due to coil icing up.
Reprogram parameter U15. If coil is iced, see
below.
Coil is iced.
Improper air flow.
Remove any obstructions in return air stream.
Clean return air filter and grille. Check for crushed
or restricted ducting, ducting must be as straight,
smooth and taut as possible.
Read Passport II programmable parameter U15
and reset. If de-icing cycle does not melt ice,
switch a/c to heat until ice melts or use hair dryer to
melt ice.
If problem persists program low fan speed
parameter U3 for maximum value (55).
"HHH" is
displayed on
Passport II.
High pressure switch is open (in
cooling) due to improper sea
water flow.
Strainer or intake may be plugged, sea cock may
be closed, check sea water hose for kinks or
collapses. Verify pump operation; check pump
circuit breaker if applicable.
Remove any obstructions in return air stream.