The A/C relay on your Honda, like most vehicles today, is computer controlled. The relay will have electrical power at two terminals of the relay with the key on and power at only one terminal with the key off. If there is no electrical power present at the relay, then you have to inspect the fuses. There are two fuses for the relay. One can be found in the under dash fuse panel. It will be a 7.5 amp fuse and will be located in position #6 of the fuse panel labeled A/C clutch relay/cooling fan relay. The other fuse is located in the under hood relay and fuse box. This is a 15 amp fuse and will be in position # 34 and labeled condenser/fan. If both fuses are good and there is electrical power to two of the terminals at the A/C compressor clutch relay, then you have a control problem. It could be as simple as a bad relay or the A/C system is low in charge. The A/C system has a pressure switch that stops the operation of the A/C compressor if the charge of refrigerant in the system becomes inadequate, too low. This is done to prevent damage to the compressor. To diagnose a control problem will require more specialized equipment, higher level of training and knowledge for diagnosis. At this point I would suggest that you involve a repair facility to perform this diagnosis.

Is this a single speed, single stage furnace that your using? If so there is no way you can hook four zones up to one system like that and expect it to work satisfactorily. The air has to go somewhere, with 2 zones that is set up properly a by pass damper is installed which dumps excess supply air back into the return duct. Many times this by pass is installed incorrectly anyway. With only one or two zones calling there is no way to by pass the excess air without affecting the performance and operation of the furnace. More then likely it will be excessivly loud but I can guarantee the furnace will also be operating alot hotter then it is designed to be. Thats not good.

Thanks so far... I'm almost there. Now Its obvious I don't have the 5th C wire. I want to add another wire from thermostat and run it to the furnace. I can't get a hold of Coleman (Seems they are on an Extended Lunch Hour). I've included a pic to help you help me do the right thing here. I've traced everything correctly in showing the Thermostat and the AC wire. Tried my best in filling in all the blanks with the illustrations. Next to the 1-5 screws I have showed the color of the wire that is attached to each screw from the thermostat. Where should I attach the C wire that I am going to add to the new thermostat? What type of wire/guage should I get from Home Depot? 1=White/Gray 2=Green 3 4=Red 5=Blue

Well, I'm not a hvac guy, but I'll start with some questions that they will want: Does the fan inside run (blowing non-cool air)? Does the outside unit appear to be running? In other words, does the unit appear to be running and just not cooling, or is the unit actually not even running? If the unit isn't starting, there are various relays that can get stuck, or stop working. I had an older unit (waiting to be replaced) with a failing relay that I could get to work again just by turning off the power to the unit for a minute, and then turning the power back on. If it is running, and not cooling, then it could be a coolant leak.