Aprilaire 62 Safety And Installation Instructions Manual page 13

SYMPTOM
Humidifier does not operate in "Test/Reset" mode.
TROUBLESHOOTING PROCEDURE
• Check wiring diagrams for correct humidifier control
installation.
1. For Model 700 Series humidifiers with gray color
housings, ensure that wiring diagram in Figure K is used.
2. For Model 700 Series humidifiers with almond color
housings, ensure that wiring diagram in Figure L is used.
• Make sure that the blower is operating and the HVAC
system is calling for heat.
• If connected to a Model 400 Series humidifier, make sure
both floats in the bottom of the scale control insert are in
the down position. If necessary, dump out water to lower
the floats.
• Check voltage at the humidifier control "R" and "C"
terminals. Voltage should be 22 VAC minimum to 30 VAC
maximum.
• Make sure that the saddle valve is open.
• In "Test/Reset" mode, the humidifier will operate for 1
minute only. DO NOT LEAVE THE HUMIDIFIER CONTROL
IN "TEST/RESET" MODE AS THE HUMIDIFIER WILL NOT
OPERATE.
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SYMPTOM
Yellow "Change Water Panel" light is blinking (see Figure M).
TROUBLESHOOTING PROCEDURE
Check the condition of the water panel and replace it if
mineral deposits are blocking air flow. Follow the instructions
on the water panel box. Rotate the knob to the "Test/Reset"
position for at least 5 seconds to reset water panel change
timer. Check that the timer setting is correct for the humidifier
model and water conditions (see Figure C). DO NOT LEAVE
THE HUMIDIFIER CONTROL IN "TEST/RESET" MODE AS THE
HUMIDIFIER WILL NOT OPERATE.
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