I have an ongoing problem with what seems to be erroneous High Temperature alarms on the Multiplus 12/3000/120-50.
The unit details:
|MultiPlus 12/3000/120-50 120V|
|Last connection||5 minutes ago|
|Hardware configuration||Single unit|
Things I've done to troubleshoot:
-- checked all terminal connections... everything is tight.
-- manually measured surface temperature of multiplus, which ranges between 20C and 30C.
-- upgraded firmware to latest version
-- temp alarm doesn't seem to have a pattern for which it gets tripped. When the alarm goes off, there doesn't seem to be excessive load on the system.
-- I observed that the fan on the unit does not come on and I thought it was a faulty fan. I added a large load to the system by turning on the AC unit when inverting and the fan promptly came on. So, I'm thinking the fan is working as it should.
-- the unit is installed in a bench seating area, which is enclosed. I thought ventilation was a problem, so I added 4 cooling fans and external ventilation, still received alarms.
Any ideas on what else to check?