Mode Selection of All KX Outdoor Unit based on the indoor unit operation

•I/U – 1 is switch on in cooling (B)

•O/U will operate in cooling only (B)

•I/U – 2 is then switch on in Heating. The unit will only run as “Fan” whilst the O/U is operating in cooling mode (C)

•I/U – 1 is switched off (D)

•O/U – Changes its operation to heating only if no I/U is in cooling mode and one i/u is in heating mode. (D)

•I/U – 2 Operates in heating mode (D)

•I/U -1 is switch on but only operates in “Fan” mode whilst the o/u is in heating mode. (E)

•I/U – 2 Is Thermo off. If all heating units are then Thermo OFF, Outdoor unit goes off and keeps heating mode.

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FDC_KXEN6 Case 1 - Priority on Mode selection

I/U 1 Cooling Cooling (Remote Controller) Off Off

Off Thermo OffI/U 2 Heating

Cooling O/U Off Off

Change to Heating A B C D E F

"Invalid Operation" disappears

RC Shows "Invalid Operation" Unit operates as "fan" (Display Keep "Heating)

RC Shows "Invalid Operation"

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SW3-7 is switch on in the O/U

•CNS is open for “Forced Cooling” (A)

•O/U operates is cooling mode (B)

•I/U – 1 is switch on in cooling mode and it operates normally (B)

•I/U – 2 is switch on in Cooling (B)

•I/U – 2 is switched over to heating mode. RC shows “Mode Invalid” fan operation “Heating” displayed. (C)

•CNS is closed for “Forced Heating” (D)

•O/U changes operation mode to “Heating” (D)

•I/U – 1 RC shows “Mode Invalid” Displays keep cooling operates as “Fan” (D)

•I/U – 2 Model invalid disappears and the unit operates as normal in heating mode. (D)

Mode Selection of Outdoor Unit based on forced Heating or Cooling operation

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FDC_KXEN6 Case 2 - Forced Operation (SW3-7 On) CNS Open (Forced Cooling) Closed (Forced Heating) I/U 1 Cooling On Cooling Off

Cooling On I/U 2 Off Heating

Cooling On O/U Off

Going to heating mode A B C D

Start Showing "Mode Invalid" Display keeps "Cooling" Operates as "Fan"

"Mode Invalid" fan operation "Heating" display.

"Mode Invalid" Disappears

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