McQuay MQC164036CCK216B Technical Manual page 69

R410A 60Hz 16 SEER Universal Outdoor Series Technical Manual
F6: Outdoor condenser pipe temperature sensor (T3) failure
Solution:
(1)Check the T3 sensor connection loosen or not, inset it firmly, if not solve, go to next step;
(2)Take out the sensor, measure the resistance of the sensor, it is about 5KΩ at 25℃, if not, replace it; if resistance
normally, change the main board.
EE: Water fulfilled protection (Alarm of condensing water overflow)
Solution:
(1)If the unit does not have water drainage pump:
(2)If the unit has water drainage pump:
Check the water level switch if it is connected well, inset it firmly; then check the switch is blocked or
b)
not, if it is blocked, replace it, otherwise go to next step
b) Check the connection between pump and main board if it is 220-240V, if it is, change the water pump;
if not, change the indoor main board
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Check the water level switch short connect or not, if not, short connect it, if it still not
b)
solves, change the main board