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Questions & Answers
I have 3 Fujitsu heat / cooling multi split
If it happens in heat it must happen in cooling. The indoor unit has nothing to do with if it's heating or cooling. You likely have 2 moving parts in the machine, the blower wheel and the swing fins. Turn swing option off, eliminate that. You get the rest...
on Jun 04, 2017
Why my heat pump only heat in emergency heat only,the condens is cutting off and on
It sounds like a maintenance issue with your heat pump, its clear that the unit is trying to run but one of the safeties is shutting it down trying to protect itself. most heat pumps are equipt with a High press lockout usually a manual reset ,a low press, cut out switch resets on rise of press automatically. Causes of LPCO Extremely dirty condenser coil or evaporator coil, Loss of fan on condenser, Low refrigerant charge. A competent Service man should be able to locate and correct this problem. A seasonal check up on the unit avoids these problems.
on Feb 22, 2015
How do you get the external thermostat to control the unit
What is it doing now? If it works but not well it could be the postioning of the thermostat. Air flow around it must be plentiful and unobstructed. Ensure thermostat is connected to unit correctly. Using a power meter, check that you are getting power to the thermostat AND it is going back to the unit. Doesn't work if it does not send power back.
on Apr 23, 2013
COMPRESSORS HAVE AN INTERNAL T-STAT TO PROTECT THE WINDINGS ... SOME THING IS CAUSING YOUR COMPRESSOR TO RUN "HOT" THIS WILL KICK "IN & OUT" THE COMPRESSOR DURING COLLING OPERATION AND HEAT MODE (IF IT IS A HEAT-PUMP).
1ST THING TO EASILY CHECK IS THE CONDENSOR "OUT-SIDE" COIL. (CLEN BOTH WHILE YOU ARE AT IT).
THESE FANS PULL THE AIR IN AND A BLOW OUT THE COIL .... ALL THE DIRT WILL BE ON THE INSIDE.
2ND THING IS THE FAN ITSEL OVER HEATING AN TURNING "OFF" ON ITS OWN "BUILT-IN POTECTION T-STAT". THIS WILL GIVE YOU THE IRRATIC OPERATION YOU ARE DESCRIBEING.
I TEND TO THINK IT IS YOUR FAN MOTOR ... EASY TEST. TURN "OFF" EVERYTHING BUT THE FAN. SET IT FOR MANUAL "RUN ALL THE TIME" POSITION. THE FAN SHOULD NOT KICK OFF !!! IF IT DOES YOU FOUND THE PROBLEM.
IF IT DOES TURN OFF IT CAN BE A WEAK CAPACITOR.
UNITS VARY ON WETHER THE CAPACITOR IS FOR COMPRESSOR/FAN OR HAS A SEPERATE CAPACITOR FOR EACH. CAPACITORS ARE NOT EXPENSIVE.
HOPE THAT CAN NARROW YOUR PROBLEM DOWN
on Sep 12, 2012
How to connect to my
carefully follow the below steps;
Turn off the circuit breaker that controls the air conditioning system.
Turn the thermostat to the "On" position to make sure that all power is
cut off and the air conditioner cannot accidentally operate.
Remove the cover of the existing thermostat and remove the colored wires
from the terminals. Take out any screws that secure the thermostat to
the wall, and remove the thermostat.
Mount the new thermostat on the wall. Feed the wires through the unit,
with enough slack to allow you to make the new connections.
Connect the red wire to the thermostat terminal labeled "RH," "RC" or "R." The red wire carries the power from the transformer.
Connect the green wire to the thermostat terminal labeled "G." This controls the relay that controls the fan. Attach the yellow wire to the "Y" terminal of the thermostat. This powers the main control. Connect the white wire to the "W" terminal. This is the heating control wire.
Close the thermostat's cover and turn the breakers back on. Turn the new thermostat to the "On" position to test it and that would be all.
I hope the above helps. If it is not helpful, please let me know so that I may direct you further.....
on Feb 25, 2011
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