Operating Instructions; Troubleshooting Guide - Aprilaire 1710A Installation & Owner's Manual

OPERATING INSTRUCTIONS

DEHUMIDIFICATION
1. Check the wiring to any accessories if applicable.
2. P lug unit in and turn on/off switch to ON.
3. W ait 5 seconds then rotate the main control knob clockwise
to the TEST position.
4. If set up correctly, the dehumidifier blower will turn on and
the dehumidifier damper output will turn on. After 3 minutes
the dehumidifier compressor will turn on. The blower and
compressor will remain on for 1 minute in TEST mode. After
1 minute has elapsed, the dehumidifier blower and compressor will turn off and the dehumidifier
damper output will turn off.
5. T he Status LED will blink red and green alternately if the control knob has been left in TEST after the
compressor has turned off.
ADJUSTING DEHUMIDIFIER SETTING
1. U se the control knob on the unit to set the desired dryness level.
• B ased on indoor temperature, use Table 1 to determine the control knob setting to achieve the
desired humidity level.
• F or most installations, start with a setting in the NORMAL range. See Figure 3.
• M oving the knob clockwise towards MORE will increase dehumidifier run time, allowing for lower
humidity levels.
• M oving the knob counterclockwise towards LESS will decrease dehumidifier run time, allowing for
higher humidity levels.
2. R eference the Installation Instructions for the Model 76 Control, Model 8910 Home Comfort Control
Third-Party Control for setting adjustments if using a control other than the dehumidifier's onboard control.
TAblE 1 – %RH (± 5%) based on Control Knob Setting & Indoor Temperature
Control Knob Setting
& Dew Point
65°F
1 – Less, 65°F DP
2 – 60°F DP 86%
3 – Normal, 56°F DP 74%
4 – Normal, 52°F DP 64%
5 – Normal, 48°F DP 55%
6 – 44°F DP 47%
7 – More, 40°F DP 40%
ExAMPlE: At an indoor temperature of 75°F and a control knob setting of 3 (56°F DP), the dehumidifier
will work to achieve a 53% humidity level.
• T he %RH values are ± 5% and are to be used as a GUIDE ONlY for initial set-up.
• I ndoor temperature is measured at the inlet to the dehumidifier.
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FIGURE 3 – Control Knob Setpoint
90-1327
™ , or
Indoor Temperature
70°F 75°F 80°F
84% 71% 60%
73% 61% 52%
63% 53% 45%
54% 45% 39%
46% 39% 33%
39% 33% 28%
34% 28% 24%

TROUblESHOOTING GUIDE

Symptom Possible Reason Troubleshooting Procedure
Dehumidifier does No power to unit. • C heck that the dehumidifier is plugged in.
not turn on/run.
• C heck that the power switch on the dehumidifier is ON.
• C heck that control knob is set to a dryness level number.
• C heck that the circuit breaker has not tripped. The 1710A
Dehumidifier blower Pressure drop across • C heck dehumidifier air filter and wash or replace.
is running but little filter is too high.
or no airflow.
Dehumidifier blower Float switch open. • I f float switch installed, check connections at control board and
is running but
compressor is not.
• I f no float switch installed, check that the jumper is installed at
Coil frosting. • L ack of, or reduced airflow. Check/clean filter.
• I nlet air conditions below 60°F. Use the control knob to turn
Dehumidifier is not Drain line or drain • C heck that the drain trap is installed correctly.
draining properly. trap blocked.
• C heck the drain trap and drain line for blockage by slowly
• C heck drain line for continuous downward slope.
Dehumidifier is Normal function. • A ir is reheated across the condenser coil, resulting in a
producing hot air.
lED CODES
Green lED Codes
Activity
ON Solid
Blinking 1 second on, 1 second off
Blinking 1/2 second ON, 1/2 second OFF
Alternating Green & Red
requires a minimum of 8 amps.
empty condensate pan.
the float switch terminals on control board.
down the dryness setting.
pouring one pint of water into the dehumidifier drip pan located
below the coil.
temperature rise between inlet and outlet.
Status
Compressor ON
Sampling
Defrosting
Control knob was left in Test mode
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