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FSI® 2.5/5 Ton AC/Heat Pump Units (ECU) Operational Guide for F‐DI25HP0105CM F‐DI35HP0100CM F-DI40HP0100CM F-DI50HP0100CM...
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Operation guide for the FSI heat pump (ECU) There are no user serviceable parts within the ECU and the user should not attempt to service the ECU in anyway. Failure to use a grounded electrical outlet could result in an electrocution injury.
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Route the controller cable into the shelter, one end plugs into the top of the controller and the other end plugs into the ECU. The ECU has a rain shield cover over the control cable jack, lift the cover and align the plug so that it can be inserted into the jack, you may hear a click when it locks in place.
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The second line of the display is the set point, this is the temperature that you set for your requirements. Press the Higher or Lower arrows once and the display will show set point and the temperature that is currently set. To change the temperature continue pressing or hold the up and down arrows and set your new temperature.
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Shut down procedure. Turn the controller off by simply unplug it from the control cable. If the ECU compressor was running it will stop. The ECU fan will continue to circulate air until it is turned of at the power supply breaker. This is normal operation. Turn off the power supply breaker.
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ECU Trouble Shooting: 1. The ECU will not run. - Check electrical connections, power cord, Temp controller cable, etc. 2. The ECU is operational (condenser fan running) but not providing cold/hot air from the supply ducting. Have an authorized HVAC technician examine the unit. 3.
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