8051 temperature control

I have done this temperature control codin n i am hopin it will work as i'm only goin test it in the morning. Meanwhile i would like to know, how do i add a code which makes the 7 segment shows error "E R" when temperature rises more then preset or let say 50 celcius
need some guidance

ER can be displayed E and R separately on 7-segment, i can just give you how to display them..

for E:
|¯
|¯
¯
for r:
_
|

so combined they will look something like this on 7-segment

|¯   _
|¯  |
 ¯

when the code for temperature controlled fan from Binu project is executed there are many errors how to tackle them?? plz help?

C:\KEIL\C51\ASM\REG52.INC(9): error A10: ATTEMPT TO DEFINE AN ALREADY DEFINED SYMBOL

why this error comes???

well error explains itself. there are two symbols/labels with same name.

try not to include the reg52 file and try again.