Applications
The SmarTester Diagnoses the Following
Inspections and Installations
• Loss of Power (24VAC &115VAC)
• Proper Venting (Pressure Switch)
• Proper Duct Size (Cycling on Limit)
• Thermostat for Proper Cycling
• Flame Sensor (MicroAmps)
Troubleshooting (Highlights Only)
• Inducer Motor Slowdown Due to Secondary Heat Exchanger Problems
(Pressure Switch)
• Thermostat Circuit for Intermittent Problems
• Short Cycling Due to Partially Blocked Vent (Pressure Switch)
• Air flow (Limit)
• Intermittent problems
Preventative Maintenance
• Proper Sequence of Operation
• Timing of Ignition Warm-Up, Fan Timer, etc.
• Detects intermittent problems in the thermostat circuit
• Detects a quick drop-out of pressure switch
• Can measure accuracy of a pressure switch closing with the use of a
manometer
• On polarized equipment, detects reverse polarity on the 24VAC side.
• Detects a loss of source voltage (24VAC and 115VAC)
• Detects open circuits
• Detects a limit dropping out before thermostat is satisfied
• Measures microAmps in the flame rectification circuit
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