I n s t a l l a t i o n , O p e r a t i o n , & M a i n t e n a n c e M a n u a l
13
www.herrmidifier-hvac.com
Test Points
Each circuit board (see Figure 13) features three test points to
aid in the troubleshooting process. Each of these test points
works on a 0-5 VDC scale. “0 VDC” = 0%. “5 VDC” = 100%. All
readings are between the test point and ground.
Test Point #1:
Provides exact reading of Time Cycle setting.
30-180% = 0-5 VDC (Factory set: 1 volt)
Test Point #2:
Provides exact reading of Low Drain threshold.
50-100% = 0-5 VDC (Factory set: 3 volts)
Test Point #3:
Provides maximum percentage of output.
50-100% = 0-5 VDC (Factory set: 5 volts)
Herrtronic
®
Model 6500
SECTION V TROUBLESHOOTING GUIDE
All HERRMIDIFIER 6500 Series humidifiers are manufactured
under strict quality control and are subjected to a complete
operational test prior to shipment. All circuit board adjustments
are made at the factory and should not be adjusted beyond the
guidelines set in this troubleshooting guide without first consulting
a factory representative. The following information is for your
reference. If you still experience difficulty after trying these
remedies, contact your HERRMIDIFIER representative.
WARNING!
The HERRMIDIFIER 6500 Series Electronic Steam
Humidifier cabinet was designed to house and shield
the components from outside interference. Absolutely
NO other components may be mounted inside or
be electrically tapped into the humidifier without
HERRMIDIFIER’s express written permission. Failure to
heed this warning will void your warranty.
Figure 13
FAULT LED
CAPACITY ADJUSTMENT
LOW DRAIN
THRESHOLD POT
CYCLE TIMER POT
DRAIN TEMPERING
JUMPER
TEST POINT #1
(DRAIN THRESHOLD READING)
TEST POINT #2
(EQUILIBRIUM VOLTAGE READING)
TEST POINT #3
(OUTPUT CAPACITY)
J1 CONNECTOR
