NEED TO REPLACE PLYWOOD SUPPORT FOR RUUD AIR HANDLER MODEL UBHC-17J11NFD. CAN I DO THIS WITHOUT REMOVING THE ENTIRE UNIT?

SOURCE: Wiring Diagram

here is a basic wiring diagram for all air cond systems your thermostat consist of treminal r w y and c run a four conductor wire fromm thermostat to ai handler the air handler should allso have eather have red blue white wires or a teminal block marked r w c r stands for red w for white c for comon allso blue run color for color from the thermostat to ai handler with exeption of yellow yellow runs straigth to condenserand retuns in white wire to air handler wich gets conected to comon hope this help[s you

SOURCE: Old Ruud Air Conditioner

all heat pumps follow the same schematics universal get a hold of any heat pump schem and you should be able to aplie it to yours

SOURCE: Need to find ac coils for RUUD ac in the Air Handler

follow the copper lines coming into the air handler.1 will be large and insulated and the other smaller and uninsulated.They attach to your evap coil.

SOURCE: RUUD UBHA-14 J11SFJA air handler. The fan (blower) doesn?t runs

Absolutely, however, you want to properly diagnose the reason why the fan is not running. It could be a less expensive part than the fan motor itself.
First, check to see if you have the proper voltage going to the motor. I believe your motor requires 240volts ac. If you do not have 240 volts, you have a control problem.......either the thermostat is failing to close R & G or your blower relay may have failed to close the contacts necessary for your fan to operate.
If you have the voltage, then you want try spinning the blower wheel with your hand. Does it spin freely? Is the motor warm/hot? If so, turn everything off for an hour or so. As soon as your energize it, try spinning the motor with your hand again.....if it spins freely with no resistance and then starts running by itself, the problem is the run capacitor (approx $20.00 depending on where you purchase it from). If there is resistance when you try to spin it, the problem is most likely with the bearings and you will need to replace the motor.......if you have to replace the motor, go ahead and replace the capacitor also, making sure it is properly "matched" with your new motor.

I hope you find this to be very helpful to you, moving forward. :-)

Lawrence Walters

• 426 Answers
• Posted on May 18, 2011

SOURCE: Have Ruud UPKA-025JAZ heat pump

have you call them