Dometic CapTouch, Installation And Operating Manual

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20
EN
Operation CapTouch Cabin Control
7 .4 .4 Identifying Programming Fault Codes
10
Identifying Programming Fault Codes
To protect the unit, certain fault conditions trigger a lockout
that shuts down the control. The control will not restart until
the fault is repaired. The type of lockout associated with
the fault depends on the type of fault detected (refer to
the Fault and Status Codes table) in combination with the
level of protection (refer to the Fail Safe Levels table) that
was programmed in the P-5 parameter (refer to”Selecting a
Parameter” on page 15).
Fault and Status Codes
Code Description DX CW
HPF
High Pressure Switch Fault: indicates
high refrigerant pressure. This fault is not
applicable in HEAT mode.
x
LPF
Low Pressure Switch Fault: indicates low
refrigerant pressure. This fault has a three-
minute shutdown delay (for display firmware
#41 and newer).
x
PLF
Low Pump Flow Fault: indicates high-water
temperature in the condensing coil or low
pump flow.
x
IL/- - Indicates a loop water sensor failure x
IS/- -
Inside Sensor: indicates the
display built-in temperature sensor is
damaged.
x x
Ar/FL
Indicates the air filter replacement timer has
expired.
x x
SAH Indicates a high supply air temperature limit. x x
SLP
Indicates Sleep or Lock mode. Buttons do
not function in these modes.
x x
LO/SE Indicates a seawater low limit. x x
Code Description DX CW
LO/
AC
Low Voltage Fault: indicates low voltage.
This fault offers extra protection for the
compressor and components within the
system during low-voltage (brownout)
conditions:
• After the compressor starts, the low
voltage monitor checks the AC input
voltage. If voltage drops below the
specified setting (95 VAC/195 VAC)
and remains below for three minutes,
the system shuts down and the low AC
voltage fault displays.
• The fault continues until the AC input
voltage rises above 95 VAC/195 VAC.
Then, the LO/AC fault code clears
automatically and the cooling or heating
cycle commences.
x x
Fail Safe Levels
Lvl Description DX Only
0
Fail Safe Level 0: Temporary failsafe, limited
to five-minutes. The system will automatically
switch back to Level 3 after five minutes
(only in display firmware #41 and newer).
Provides minimal failsafe protection and is not
recommended.
• Only the IS/- - fault is detected and displayed.
• The control shuts down and will not restart
until the fault is repaired.
• Once repaired, the control restarts after a
two-minute delay.
x
1
Fail Safe Level 1 (only for display firmware #40
and older): includes the failsafe actions of the
previous level and detects all other faults, but
they are not displayed.
• The system shuts down for two minutes or
until the fault is cleared, whichever is longer.
• The system restarts when the fault is cleared.
2
Fail Safe Level 2 (only in display firmware #40
and older): includes the failsafe actions of the
previous levels and displays all other faults.
• The system shuts down for two minutes or
until the fault is cleared, whichever is longer.
• The system restarts when the fault is cleared.
3
Fail Safe Level 3: includes the failsafe actions
of previous levels and the system will lockout
after four consecutive HPF, LPF or PLF faults. In
addition, the lockout can be cleared.
• The system shuts down for two minutes or
until the fault is cleared, whichever is longer.
• To clear the lockout, enter OFF mode.
Then, return to ON mode.