IM 796
Page 17
Unit Indicator Lights
IR signal receiver
When an infrared remote control operating signal is transmit-
ted, the signal receiver on the indoor unit beeps to confirm
acceptance of the signal transmission.
Figure 18. Indicator Lights Location - Indoor Unit
Cooling only unit
Table 6 shows the LED indicator lights for the cooling only
unit under normal operation and fault conditions. The LED
indicator lights are located at the bottom right side of the
indoor unit.
(See Figure 18 and Figure 19.)
Figure 19. LED Indicator Lights for Cooling Only Unit
Table 6: LED Indicator Lights: Normal Operation and
Fault Conditions for Cooling Only Unit
ON
ON or OFF
Blinking
Heat pump unit
Table 7 shows the LED indicator lights for the heat pump
unit under normal operation and fault conditions. The LED
indicator lights are located at the bottom right side of the
indoor unit.
The heat pump units are equipped to maintain selected room
temperature by switching automatically to either “cool” or
“heat” mode.
Figure 20. LED Indicator Lights For Heat Pump Unit
LED indicator lights
IR Signal Receiver
Timer
Sleep mode
Power ON
Dry mode
Power
Sleep
Timer
Dry
Mode
or
Fault
Action
Timer
—
Sleep
—
Dry
—
Continu-
ously
Indoor
Coil
Frost
Check for low
air flow
Once Every
2 Seconds
Room air
sensor contact
loose/short.
Repair or
replace
Twice Every
2 Seconds
Indoor coil
sensor contact
loose/short.
Repair or
replace
Three Times
Every 2
Seconds
Sensor coil
problem, com-
pressor over-
load protection
trip or gas leak.
Check circuit
breaker,
check for gas
leak
Cooling mode
Dry mode
Sleep mode
Heat / Fan mode
