So I was able to get a SM150 for $50. Could’ve got it for free as it was listed going to curb but I offered the sellers $50 to hold it for me and I picked it up after work 30 minutes ago.
Manufactured in 2003. Control panel powers on but I didn’t attempt anything as it’s late and once I get started I won’t be able to stop. The seller said they believe something is wrong with the thermostat.
Whats the best way to troubleshoot the unit to make sure I diagnose the problem correctly and any other potential issues before using?
thanks in advance for any help advice.