Responded to an emergency air conditioning request from a mobile phone provider in La Habra California. Our technician found the thermostats for both commercial York units were blank. Traced issue back to a tripped duct smoke detector. Reset the detector, units restarted but detector swiftly tripped again. Continued troubleshooting and diagnosed a faulty ECM blower motor on unit #1. Reset unit #2 for partial cooling and will quote necessary repairs for unit #1.
