Lennox LICH4012021T431E-1, Service Manual

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Controller
Electrical Control System
161
8. Adjust button: Set indoor temperature up. If press and hold on, it will increase at 1degree per 0.5
second.
9. Adjust button: Set indoor temperature down. if press and hold on, it will decrease at 1degree per 0.5
Second.
10. Swing button: First press, start swing function; second press, stop swing. (Match to some model with
swing function).
11. Economy operation button: press this button, the indoor unit operates in economy mode, press again,
exit this mode (it may be ineffective for some models)
12. Fan speed button: press this button consecutively; the fan speed will circle as follow:
13. Lock button (hidden): When you push the LOCK button, all current settings are locked in and the wire
controller does not accept any operation except that of the LOCK button. Use the lock mode when you
want to prevent setting from being changed accidentally or play fully. Push the LOCK button again when
you want to cancel the LOCK mode.
Name and function of LCD on the wire controller
1. Operation mode indication: When press” MODE” button, the following mode can be selected in circle.
Auto Cool Dry Heat Fan only Auto.
Auto
→
Cool
→
Dry
→
Heat
→
Fan only
→
Auto
For cooling only model, heat mode is skipped.
2. Timer: When adjust setting on time or only on time is set, the “ON” is lighted. When adjust setting off
time or
only off time is set, the” OFF" is lighted. If on and off timer are both set, the “ON” and “OFF” are
both lighted.
3. Follow me function: There is a temperature sensor inside the wire controller, after setting temperature, it
will compare the two temperatures, and the space of wire controller will be the same as setting
temperature. It is available under cooling, heating, auto mode.
4 ON/OFF indication: When it is on, the icon display, otherwise it is extinguished.
5. Fan speed indication: There are four fan modes: low, middle, high, auto. For some models, no middle
fan then the middle fan is seen as high speed.
6. Lock: When the "LOCK" button is pressed, the icon appears and other buttons is unable, press again,
the icon disappears.
7. Temperature display zone: Generally it displays setting temperature; it can be adjusted by press
temperature button
▲
and
▼
.But in fan mode, no display here.
Remark: