Aprilaire 1710A Troubleshooting Manual

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Aprilaire Dehumidifier Troubleshooting Manual

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.

Models 1710A, 1750A, 1770A

Table of Contents

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Page 1 Aprilaire Dehumidifier Troubleshooting Manual Models 1710A, 1750A, 1770A Table of Contents 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.
Page 2 Troubleshooting Fault Codes...
Page 3 • • For older power boards, the high temperature switch and ribbon cable are connected to a daughter board that attaches to the power board. Disconnect the high temperature switch wires and verify that the daughter board is securely attached to the power board and that the socket on the daughter board is not loose.
Page 4 7 6 5 4 3 2 1 • • • •...
Page 5 Top Dip Switch is Local/External Frost Sensor Terminals...
Page 6 • • • • • • • •...
Page 8 Verifying Capacity...
Page 11 Water Leaks...
Page 12 Blower Does Not Function • •...
Page 13 7 6 5 4 3 2 1 • • Circuit Breaker Trips • •...
Page 14 1710A/1750A/1770A Parts List...
Page 16 16 | P a g e...
Page 17 17 | P a g e...

1770a 1750a