Aprilaire 1710A Troubleshooting Manual
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Also See for 1710A:
- Troubleshooting manual (18 pages) ,
- Installation & owner's manual (5 pages) ,
- Installation and owner's manual (2 pages)
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Aprilaire Dehumidifier Troubleshooting Manual
Table of Contents
Troubleshooting Fault Codes ....................................................................................................................... 1
1 blink ............................................................................................................................................... 2
2 blinks ............................................................................................................................................. 2
3 blinks ............................................................................................................................................. 2
4 blinks ............................................................................................................................................. 2
5 blinks ............................................................................................................................................. 6
6 blinks ............................................................................................................................................. 6
7 blinks ............................................................................................................................................. 6
Verifying Capacity......................................................................................................................................... 8
Water Leaks ................................................................................................................................................ 11
Fan Does Not Function ............................................................................................................................... 12
Circuit Breaker Trips ................................................................................................................................... 13
1710A/1750A/1770A Parts List .................................................................................................................. 14
1710A/1750A Electrical Schematic ............................................................................................................ 16
1770A Electrical Schematic ........................................................................................................................ 17
Instruments you will need to complete troubleshooting:
1. Digital Multi-Meter (DMM) capability of measuring
AC and DC voltage
Resistance
Capacitance
2. Temperature Meter for air temperature
3. Humidity Meter for air RH
Minimum tools needed to complete troubleshooting:
1. Phillips screwdriver (#2) or drill driver with #2 Phillips bit
2. Small (terminal) flat head screwdriver
3. Needle nose pliers
4. Level (to troubleshoot water leak claims)
Note: Do not hook up refrigeration gauges to the dehumidifier. Use of gauges will result in
refrigerant loss and performance loss.
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Models 1710A, 1750A, 1770A
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Summary of Contents for Aprilaire 1710A
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Page 1: Table Of Contents
Verifying Capacity............................8 Water Leaks ..............................11 Fan Does Not Function ..........................12 Circuit Breaker Trips ........................... 13 1710A/1750A/1770A Parts List ........................14 1710A/1750A Electrical Schematic ......................16 1770A Electrical Schematic ........................17 Instruments you will need to complete troubleshooting: 1. -
Page 2: Troubleshooting Fault Codes
Troubleshooting Fault Codes The red Fault LED on the control board will blink to indicate a fault. The number of blinks determines the fault that was detected – carefully count the number of blinks: 1 blink The control board is not receiving a good signal from the RH sensor on the sensor arm. 1. - Page 3 1. Turn the ON/OFF switch OFF, and turn the control knob to OFF to reset the fault. 2. Turn the ON/OFF switch back ON and after 10 seconds, turn the control knob to Test. The dehumidifier blower will turn on for 3 minutes with the green Status LED blinking, and then the compressor will turn on with the green Status LED staying on continuously.
- Page 4 Disconnect the wires connected run capacitor and the orange wire connected to the power board. Measure the capacitance of the run capacitor – it should be 55 microfarads ± 5% for the 1710A/1750A and 60 microfarads ± 5% for the 1770A. If not, replace the capacitor.
- Page 5 4. If the compressor does start, verify that the refrigeration system is operating sufficiently to prevent a “4-blinks” fault. a. If applicable, disconnect the duct from the discharge of the dehumidifier. Verify that the flap damper on the outlet of the dehumidifier opens/closes freely. b.
- Page 6 degrees (10°) or more. If the inlet air temperature is cold (i.e. around 60°F or lower) the drop may be slightly less than 10°F, but should be more than 5°. If there is no temperature drop (no voltage increase) then there is likely a refrigerant leak and the unit will need to be replaced.
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Page 7: Blinks
Old or New Control with Internal Control, or Model 76 Remote Control The blower will come for 3 minutes to sample the incoming air. If the inlet air is above 105° the blower will shut off and the 5 flash error code will be displayed. At the start the next cycle period the fault will end and the air will be sampled again. - Page 8 4. If a jumper is installed, remove the jumper and reinstall paying particular attention to the retention of the wire within the terminal. P a g e...
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Page 9: Verifying Capacity
11. If the inlet air conditions are not within those listed on the table, contact Aprilaire Technical Support Monday through Friday from 7:00 a.m. to 5:00 p.m. CST at (800) 334-6011 for assistance in determining performance. - Page 10 10 | P a g e...
- Page 11 15. Find the discharge air moisture content in the graph appropriate for the model being tested below. Use the 1750A graph for the model 1710A. Locate the discharge air temperature at the bottom of the curve and draw a straight line up until you meet the discharge air RH curve then read the moisture content where the two intersect at the left (265 PPD @ 100°, 24% RH...
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Page 12: Water Leaks
– do not use any other trap than what is provided with the unit. The models 1710A, 1750A and 1770A are negative pressure cabinets and the trap prevents air from being pulled in through drain tube and subsequently pushing water back up into the drain pan. - Page 13 1. Level the unit front to back, and side to side. The unit may be installed with a slight slope toward the drain outlet, but must be level side to side. 2. Turn the ON/OFF switch OFF then remove the front panel from the dehumidifier and examine the insulation on the base to look for any signs of water inside the cabinet.
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Page 14: Circuit Breaker Trips
If the fan does not turn on, the power board will need to be replaced. Circuit Breaker Trips The 1710A and 1750A must be plugged into an outlet served by a 15 amp circuit breaker; the dehumidifier uses approximately 8 amps at high load (i.e. hot and humid) conditions and less at low load conditions. -
Page 15: 1710A/1750A/1770A Parts List
1710A/1750A/1770A Parts List 15 | P a g e... - Page 16 16 | P a g e...
- Page 17 17 | P a g e...
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