Fedders R407C, Service Manual

Page: 56 / 75

F9
VI.
Temperature Control and Measurement
1.
Temperature Measurement Accuracy
The temperature measurement range of the air-con controller is from -10ºC to 60ºC.
Measurement accuracy is given in the following Table:
ºC + - ºC + - ºC + - ºC + - ºC + -
-10 1 1 5 1 1 20 1 1 35 1 1 50 1 1
-9 1 1 6 1 1 21 1 1 36 1 1 51 1 1
-8 1 1 7 1 1 22 1 1 37 1 1 52 1 1
-7 1 1 8 1 1 23 1 1 38 1 1 53 1 1
-6 1 1 9 1 1 24 1 1 39 1 1 54 1 1
-5 1 1 10 1 1 25 1 1 40 1 1 55 1 1
-4 1 1 11 1 1 26 1 1 41 1 1 56 1 1
-3 1 1 12 1 1 27 1 1 42 1 1 57 1 1
-2 1 1 13 1 1 28 1 1 43 1 1 58 1 1
-1 1 1 14 1 1 29 1 1 44 1 1 59 1 1
0 1 1 15 1 1 30 1 1 45 1 1 60 1 1
1 1 1 16 1 1 31 1 1 46 1 1
2 1 1 17 1 1 32 1 1 47 1 1
3 1 1 18 1 1 33 1 1 48 1 1
4 1 1 19 1 1 34 1 1 49 1 1
Temperature measurement error
2.
Room Temperature Control Range
The room temperature control range of the air-con controller is from 16ºC to 31ºC, both
inclusive. In manual operation, set temperature is adjusted using the temperature setting
buttons "
∧∧
" and "
∨∨
" on the hand-held transmitter.
At each press of one of the buttons, the set temperature is changed by 1ºC if it is currently in
cool or heat mode until the upper limit of 31
°
C or the lower limit of 16
°
C is reached. In Auto
mode, pressing the temperature setting buttons will cause the set temperature to change in
steps of 2
°
C until the upper limit of 24
°
C or the lower limit of 20
°
C is hit, but the
temperature setting will not be displayed on the hand-held transmitter.
VII. Auto Fan Function
Auto fan function is not available in dry and fan modes.
This function will be disabled if the sleep function is later selected. On the other hand, if
sleep function is activated first, it is not possible to select the Auto fan function.
In automatic operation, the Auto fan function will be chosen if the air-con operates in cool or
heat mode.