User Guide
1716
MicroAmps DC (µADC)
Test ame rectier diodes on a heater control. Connect leads between
ame sensor probe and control module. Turn heating unit on. When the
ame is on, there should be a measurable µADC signal, typically under
10µADC. Compare measurement to manufacturer’s specication to
determine if replacement is necessary.
Ranges: 1000µA Resolution: 0.1µA
Accuracy: ±(1.0% + 5) Volts burden: 5V
Overload Protection: 600VDC or 600VAC rms
Capacitance (MFD)
Test motor start and run capacitors. Capacitors are one of the most
failure prone components in a HVACR system. Disconnect from power and
any resistors found between terminals. Discharge capacitor before testing.
If dIS.C is displayed, the capacitor needs to be fully discharged to test.
Press SELECT three times to enter Capacitance mode.
Ranges: 10nF, 100nF, 1000nF, 10µF, 100µF, 1000µF, 10mF
Accuracy: ±(3% + 15) 10nF, ±(3% + 5) 100nF to 1000µF, ±(5% + 5) 10mF
Resolution: 0.01nF Overload Protection: 600VDC or 600VAC rms
Discharge Cap First!