A013035UA, 502209
USER GUIDE
PAGE 14 OF 17
MARLIN TECHNOLOGIES INC
ECN
13026E
DATE 01/24/2019
(Engine Run Failure)
•
If also Engine Speed Error – 120VAC Input is not detected. Check Engine,
Generator and cabling for 120VAC feed to the APCCU.
APU won’t Stop
(Engine Stop Failure)
•
Engine Oil Pressure did not drop as expected within 10sec of trying to stop.
•
Generator Frequency did not drop as expected within 10sec of trying to stop.
APU Shut off with no alarm
•
The Secured Settings have a maximum run time for both manual and auto-
starts. After this duration the APU will automatically shut off.
•
The APU will automatically turn off at the completion of an Auto-Start function
(after the appropriate duration for time, coolant temperature and low battery
Auto-Starts; and after the Cabin Temp Auto-Start reaches the appropriate
temperature)
HVAC system won’t run
(APU is running)
•
Engine Speed Error– 120VAC Input is not detected. Check Engine, Generator
and cabling for 120VAC feed to the APCCU on connector J1.
HVAC system won’t run
(Shore Power is connected)
•
Shore Power symbol On – 120VAC Input is not detected. Check cabling for
120VAC feed to the APCCU on connector J1.
•
Shore Power symbol Off – Check contactor switch connection from Shore
Power unit to APCCU on connector J4.
CCD is blank
•
Screen might be in low power mode. Watch for the side LEDs to flash briefly
every 5 seconds indicating it’s still active but in low power mode. Press the
down button to wake the display up.
•
No power to the APCCU.
o
Check that the Display cable is properly connected between the APCCU
and the CCD.
o
Check that 12V power is connected to APCCU on J2
o
Check that the Disconnect is in the closed position.
o
Check the 12V 5A fuse to the APCCU.
o
Truck battery may be completely discharged or too low to run.
HVAC Heating won’t turn on
(No Heat Flame displayed)
•
The APCCU is currently set in the wrong mode for Heat. Press the HVAC Button
to scroll through to the correct Heating/Cooling Mode.
HVAC Heating won’t turn on
(Heat Flame color is Gray)
•
The APCCU doesn’t think that Heat is needed.
o
Cabin Temp isn’t far enough from the Setpoint Temp for Heat yet.
o
Check the Heat Offsets in the Configuration Settings if Cabin Temp is
farther away from Setpoint Temp than expected.
HVAC Heating won’t turn on
(Heat Flame color is Red)
•
The APU must be running or on Shore Power for the HVAC fan to run. Start the
APU or connect Shore Power.
(NOTE: On Shore Power, only Heater 1 will turn on)
•
No 120VAC power detected. Ensure the generator output is connected to the
APCCU and working properly.
HVAC Cooling won’t turn on.
(No A/C Snowflake displayed)
•
The APCCU is currently set in the wrong mode for Cooling. Press the HVAC
Button to scroll through to the correct Heating/Cooling Mode.
HVAC Cooling won’t turn on.
(A/C Snowflake is Gray)
•
The APCCU doesn’t think that Cooling is needed.
o
Cabin Temp isn’t far enough from the Setpoint Temp for Cooling yet.
o
Check the Cooling Offsets in the Configuration Settings if Cabin Temp is
farther away from Setpoint Temp than expected.
HVAC Cooling won’t turn on.
(A/C Snowflake is Blue)
•
The APU must be running or on Shore Power for the HVAC fan to run. Start the
APU or connect Shore Power.
•
No 120VAC power detected. Ensure the generator output is connected to the
APCCU and working properly.
•
Trinary Switch state indicates that the A/C coolant pressure is outside of the
allowed range for operation. Check A/C charge pressure.
