Default code and the Compressor

[Matthew_H]

Originally Posted by Mike Betts

Matthew, et al,

I was planning to hook up a compressor this afternoon anyway. I will try the 2005 default code and report my observations.

Mike

We finally got it to work. We changed this the code below and it worked. Please explain why this worked.

relay8_fwd = !rc_dig_in18;  /* Power pump only if pressure switch is off. */
relay8_rev = 0;

relay8_rev = !rc_dig_in18;  /* Power pump only if pressure switch is off. */
relay8_fwd = 0;

[Mike Betts]

Originally Posted by Matthew_H

We finally got it to work. We changed this the code below and it worked. Please explain why this worked.

relay8_fwd = !rc_dig_in18; /* Power pump only if pressure switch is off. */
relay8_rev = 0;

Matthew,

relay8_rev must have been initialized to 1 (or set to 1) somewhere in the code or possibly it was never initialized (an uninitialized variable is, by definition, undefined).

Anyway, congrats on getting it working...

Mike

[steven114]

Keep in mind that you're not supposed to run the compressor backwards - make sure that, if you have the spike in reverse, you switch the leads on the compressor or something.

[stephenthe1]

yeah, mine won't work either. much more importantly, 2.4 won't even take input from our joysticks, yet 2.2 will. these are both unmodified. any suggestions?