For those of us that have the Dometic 4 button thermostat, you can replace the switches for less than $10.00. You can actually take the switches apart, replace the contacts and reassemble. I just ordered my switches from Mouser Electronics, Inc. under p/n PVA10AH2. They were about $1.22 for each switch and then around $5.00 for Priority shipping from the Post Office. I'll let you all know how it works out. I already had one of the switches apart. Doesn't seem like its gonna be a problem. If anyone is thinking about attempting this be aware that there is a very small spring that will pop out when you take the top off.
USCG EMC Ret.
1998 Country Coach Intrigue
2000 Jeep Wrangler Sahara
DONE DONE AND DONE!!!!! The switches that I ordered came in yesterday. It took about 5 minutes to replace the defective switch. My fan switch stopped so I couldn't toggle between zone 1 and zone 2, I can now!! The fix was cheap and very very easy. Forget about buying the reconditioned ones. I had one person say he had some for $150.00, others on ebay had them from $155.00 down to $60.00. One guy was reluctant to sell me just a switch but said he would for $15.00. I found a post at www.irv2.com website that listed the manufacturer part number and found a supplier that sold the switches for $1.22 each. I got for switches and priotity shipping for $9.95. The thermostat works like new.