Inside thermostat no power. Just replaced bothe run capacitors up top and they were a bugger to get out manipulating it past the circuit board. Got them in and fired up generator to test. Turned breaker on for ac and the salesman switch on. Thermostat wil not power up inside. Dis i do something with the circuit board ?? Is there a fuse i blew for the 5 button thermostat. Help please??!!
Take a good look at the circuit board. I shorted mine out and had to replace it and the damage was visible.
Ok so got it going but the thermostat is blank on zone 2 (rear ac). BUT both ac units are working.... And running. Do the dip switches have to be in the same configuration for both? Why would mt thermostat light up and show zone 1 but not 2?
There is a bad connection in the j11 connector to the rear ac and it can be at the front ac or at the rear ac.
Does anyone know the dip switches settings for my 2 dometic acs with the 5 button thermostat
I cant get anything but zone 2 and switched some dip switches to no avail
Still only see zone 2 on the thermostat
Dip switches are heat strip off zone 2 and 3 on zone 4 off furnace on and the rest off
The front one should have furnace on and if a heat strip then that on. On the rear zone 2 on furnace on and depending if there is a heat strip that could be turned on.
That works for the aquahot??
Yes, the thermostat controls both the ac and the aqua hot.
Well no luck. Giving up on it today. Think the rj11 cables are good. Am planning on setting the dip switches the same on front and rear ac units tomorrow-heat strip off zone 2 3 and 4 on. Furnace on and the rest off
Will see if it works
FYI
In conversation with Dometic this AM they walked me through the dip switch setup with 2 AC( 620315) 2 new control boards, (to go with the 5 button thermostat
) and aquahot
According to dometic with a 2 zone system on the thermostat the first AC (my front AC) is zone 1 and the rear is zone 2
Dip switch settings for front AC (zone 1) are :
ALL dip switch setting to the OFF position except the furnace dip switch which is set to the ON
position.
For the rear AC (zone 2 ) zone 2 dip switch settings to ON and the furnace dip switch set to ON
ALL other dip switches set to OFF
I admit i have not gone up on the roof yet to check this out but that is the Dometic tech giving advice
Anyone else have the same views???
Get a RJ /Network cable tester or you are just guessing. I recently went through similar had it not been for a tester, I would have been chasing my tail.
What I would like to know.....At what location in the coach does your Aquahot wiring physically integrate in with RJ type connectors. The only cable on the back of my Thermostat is 1 RJ cable that goes up to the filter housing of my front unit From their RJ cables back to the rear roof unit.
Network Cable Tester, HABOTEST HT812A with RJ45 RJ11 Port, Ethernet Cable... (https://www.amazon.com/HABOTEST-HT812A-Ethernet-Telephone-Continuity/dp/B0CXDJBNKR/ref=sr_1_3?crid=2QC4AVLLXPWJ&dib=eyJ2IjoiMSJ9.m2HGerjExzl_aHJ2jgfDGsdeJkeNd1-7Gspds3j5f0nt488nKvZijG3PXPkq_tsB1Sng1VKUFqZNB4auvTLDThjdxbgoIJBy32DRnEcyQcWb0QLa6pAsrHN5XMKtlTRU0a03UynESorNeuWcTJ_xWH2hq3TdC2sphLB4VerpJfvi7NxpBaZBBnxEer_anfJFMlY_zOMA9plYzlHN6LTTS2xfYmxnwAjA6PbD93MsQrI.lXJR2bbqk7f9K3BKrpC47NSCO6fwbtqyTNnd3u6w404&dib_tag=se&keywords=rj+cable+tester&qid=1756900792&sprefix=RJ+cable%2Caps%2C362&sr=8-3)
Mine does the same thing goes from thermostat to front ac. Then a separate one goes to the second AC Ordered the rj11 tester as you suggested. Will advise the status if the cable for sure when i receive it from amazon
Yeah no issues with mine after replacing one of the RJ cables, but then got to thinking?....Hmmmm....just how and where does the Aquahot communication tie into this?
Which one did you have to replace and how hard was it?
If I remember correctly the aquat is tied to the blue wire. The the red and black wires hook up to the front ac.
BUT WHERE in the coach does this physically happen?
No RJ communication connectors down at my AH, and up where all the RJ connectors are ( inside both the front and rear AC filter box) there is nothing but RJ connectors. I am thinking going from front to rear filter boxes, that RJ cable must drop somewhere for the connection. Never had to think about it until my recent failure.
There are I believe 4 16 gauge wires coming out of the bottom of the ac. You remove the filter and look towards the front of the coach and on the front ac the wires are in a wire strap. Remove the strap and separate the wires. The blue wire is the one that activates the aqua hot. The red one is 12 volt positive and I don't remember if the black is the negative and one is not hooked up. On zone 2 the only one of those 4 wires that is hooked up is the blue which turns on zone 2 aqua hot. I am in the hospital right now, if I was home I could look at my Dometic manual.
On my IH the thermostat has wires going to AH for each zone. Thermostat tells AH to turn on or off.