Water furnace error on stat

[actech2]

Just went on a water furnace for maintenance and an error code. Asked what code was , don’t remember. It takes a couple days to show up but if reset system and turn fan from auto to on error doesn’t happen ?? Maybe a drain issue ? Drain was slimy but not holding water in pan. Loop needed juicing. Added maybe a pint to get back up to 30 psig. 18* temp drop (air). Without knowing the code I’m really at a loss. And why with fan on instead of auto would error go away. Been running fine for a month keeping setpoint.
Water furnace. Ndv049h111ctloan. 161100380
White Rogers / water furnace tstat. 1f83-0431
Any ideas?

[CHAINIK]

Without knowing the code I’m really at a loss.

yeah, us too.

[actech2]

Lol. Figured why I didn’t get a response. As cruddy as drain was I just wonder if running blower continuously help stop it ? Who knows. Told them to run it in auto and call me with error if it occurs again.

[Steve_12]

If they don't tell you about the bug anymore, then everything works fine.