Please review the NCSP35 User Manual for further HVAC operational
instructions. You can scan the QR code shown below or use the
following link:
content/uploads/2018/08/owners-manual_ncsp35.pdf
Troubleshooting
HVAC
(Dometic Systems) If the room temp reads 100F, remove the room
sensor cover and pull the room sensor out of the holding clip. The
temp should read normally. Adjust the holding clip down on the
room sensor so that it is not pinching it.
(RVP Systems) If the room temp reads 111F, the room sensor was
connected to the cool shed connections on the RVP control box.
Swap the wires between the cool shed and room sensor pins. The
room temp should start reading correctly without a reset.
(Both Systems)If no HVAC function, check to see if the room (zone)
temp is blank. If it is, make sure the RV-C cables are connected to
the gateways and make sure there is an EOL (End of Line)
terminator resistor at the last gateway in the line. Make sure the
address on the gateway is correct. If that is correct, redo the
power, ground and communication wires between the gateway and
control box. Verify the gateway has 12VDC.
(Dometic)If there are multiple rapid clinking sounds when operating
the furnace function, the gateway has old software and needs to be
swapped out.
(Dometic)If a zone will not change functions (i.e. stuck on furnace
mode), try adjusting the fan speed. Most likely it will show Auto, try
and get it to either low or high. This indicates the gateway is in a
locked state. If you can get the fan mode to change, you should
then be able to change the zone function to off. Once it stays in off
mode, try power cycling the system.
If changing an HVAC function in a Zone, and the function changes in
a different zone, the dip switches are not set correctly. The front AC
is Zone 1, middle is Zone 2 and rear is Zone 3.