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        Heat Pump Defrost Troubleshooting Tips
        
            
            
    
        
            
        
        TH, TR, and TH/TR Gas Valve Terminals
        
            
            
                                                            
                                    
                            
                        
                        
                    
                
                
                     
    
#24v
Tech Tips:
        
            We’ve entered that season of service calls for “smoking heat pumps,” and I figured now is as good a time as any to share a few quick tips for troubleshooting defrost. Of course, the “smoking heat pump” calls can be solved over the phone with a quick explanation of normal defrost conditions—as can the service […]        
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            Jesse Grandbois is one of the techs who reads the tech tips, and he wrote a few tips that he wanted to share on some gas furnace control basics. This tip is about the basic terminal designations on a typical 24v gas valve. Thanks, Jesse! Have you ever noticed the TH/TR terminal on a gas […]        
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