Hitachi Heating & Cooling - Page 5 - Recent Questions, Troubleshooting & Support

THE PCBR STORY PROFESSIONAL CONTRACTORS BOARD REPAIR

sun is heat,snowflake is ac,drops are dehumidify,fan is fan

Check your remote control. press mode from fan, cool, heat and check if the heat mode indic

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You need to contact an AC repairman. There is not enough information to properly diagnose and assist you with you problem.

need to recharge system

Try cleaning or replacing your air filter. Sometimes the refirerant can't change if the air flow is obstructed.

to completly remove ,you first have to get the gas back into the external unit,

Turn the unit on. continue pressing the power button until it turns off. press set. (Each press of the power button sends a different signal)

First things first When a unit wont run turn it off!!! When a capacitor fails the motor will not start but power is still going to the motor . The motor will continue to build heat until the thermal overloads cut it off. When it cools down it comes back on and the process will be repeated over and over. In a package unit or air handler with heat strips the heat goes through the same cycles. Heat strips are thermally protected to turn off when there is no air flow to carry the heat away. Back to the motor not running. If it's a GE X13 non capacitor motor you need a new motor, in warranty you pay the for service call and installation. Out of warranty $560 plus installation. Other units check the capacitor ,it should be flat on top where the wires plug on-Failed it will be swelled and rounded a little.

Sounds like a problem with the furances circuit board. With the furance powered off, disconnect the two wires at the circuit boards thermostat terminal strip. These are probably red and white wires connected to the "Y" and "C" thermostat terminal strip on the circuit board. These two wires send 24 volts to the outside A.C. condenser unit when the thermstat is se tinto the cooling mode. With the thermostst in the "off: postion measure across the "Y" & "C" terminals at the furances thermostat terminal strip. If you have voltaged than either the board or thermostst has failed. The next step to determine which has failed is this. Disconnect all the thermostat wires at the furance. To check the heating circuit jumper across the "R" & "W" terminals, the furance should fire off for the heating circuit and run non stop beacause the thermostat is no longer controlling it and is isolated from the furance. Now remove the jumper and jumper across the "R" &"Y" terminals, the blower should run at your furance for the cooling mode and you should have 24 volts across the "Y" & "C" terminals for the outside A.C. condenser compresor contactor.Next check for blower operation by jumpering across the "R" & "G" terminals. If everything checks outs than the thermostst is the problem. Tou may also want to check the control wiring at the thermostts , furance & out side condenser unit. If the wiring has connnected somewhwre between these points or at the terminal connection this may also be bring on the A.C. when the thermostat is in the "off position.