gerrypratt
RVF Regular
- Joined
- Mar 26, 2022
- Messages
- 11
- Location
- Norton, MA 02766
- RV Year
- 2012
- RV Make
- Newmar
- RV Model
- Bay Star 3002
- RV Length
- 30
- Chassis
- Ford
- Engine
- 6.8
- Fulltimer
- No
No communications with Dometic CCC2 thermostat, AC, and Furnace.
Replaced zone 1 AC that was running poorly and saved control board.
Both Dometic zone 2 and new Advent AC zone 1 were working fine but furnace not recognized by Dometic CCC2 themostat.
Lost power to CCC2 thermostat.
Checked communication cables for bad connections.
Cleaned RJ11 inputs female jacks on control board.
Replaced RJ11 male jacks on all cables and checked for continuity.
All cables are twisted so black wire is on the left side of jack like dometic manual figure 5.
RJ11 cable from control box is twisted at thermostat end.
Should the daisy chain cable zone 1 to zone 2 be twisted or not?
Have 12VDC input at control board P6 pin 5 and 6
Control board shows 4.95VDC from RJ11 output fully connected at AC. Not sure what voltage it should be. I believe 12VDC.
Dometic states CCC2 can not be tested. Replace only if suspected faulty. So replaced with new CCC2 thermostat. Still no power at thermostat.
Have reset power supply several times but thermostat does not power up. AC has 12VDC and 110AC
Called Newmar dealer and they would not work on RV
Tried several other places and no wants to touch it.
Both AC's were working at one point but no furnace. Right now I would be happy with the two AC’s working.
Zone 1 dip switches are set open except for furnace dip switch which is set on.
I tried taking Zone 2 out of the loop with no success.
I switched out the new Advent AC135 control board with original working control board on old AC. Both control boards are CCC2 supported. Still no power at thermostat.
Is the RJ11 output of 4.95VDC to low? Should I buy a new control board? Have I got a cable connected wrong? I'm all screwed up at this point. Need someone who could lead me through this. Willing to pay someone if they can figure out to help me. Please help if you have dealt with this problem. Thank you.
Replaced zone 1 AC that was running poorly and saved control board.
Both Dometic zone 2 and new Advent AC zone 1 were working fine but furnace not recognized by Dometic CCC2 themostat.
Lost power to CCC2 thermostat.
Checked communication cables for bad connections.
Cleaned RJ11 inputs female jacks on control board.
Replaced RJ11 male jacks on all cables and checked for continuity.
All cables are twisted so black wire is on the left side of jack like dometic manual figure 5.
RJ11 cable from control box is twisted at thermostat end.
Should the daisy chain cable zone 1 to zone 2 be twisted or not?
Have 12VDC input at control board P6 pin 5 and 6
Control board shows 4.95VDC from RJ11 output fully connected at AC. Not sure what voltage it should be. I believe 12VDC.
Dometic states CCC2 can not be tested. Replace only if suspected faulty. So replaced with new CCC2 thermostat. Still no power at thermostat.
Have reset power supply several times but thermostat does not power up. AC has 12VDC and 110AC
Called Newmar dealer and they would not work on RV
Tried several other places and no wants to touch it.
Both AC's were working at one point but no furnace. Right now I would be happy with the two AC’s working.
Zone 1 dip switches are set open except for furnace dip switch which is set on.
I tried taking Zone 2 out of the loop with no success.
I switched out the new Advent AC135 control board with original working control board on old AC. Both control boards are CCC2 supported. Still no power at thermostat.
Is the RJ11 output of 4.95VDC to low? Should I buy a new control board? Have I got a cable connected wrong? I'm all screwed up at this point. Need someone who could lead me through this. Willing to pay someone if they can figure out to help me. Please help if you have dealt with this problem. Thank you.
