Robertshaw 9401 User Manual
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Robertshaw 9401 User Manual

1 heat / 1 cool digital non-programmable thermostat
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Table of Contents

NeW
110-1041
Application
The Robertshaw 9401 is a single-stage thermostat designed to control
24 VAC gas or electric heating and cooling systems or single-stage heat
pump. The 9401 requires the use of a common wire.
Features
• Summer and winter setpoints
• Large back lit display
• Adjustable temperature differential: .5°F to 3.0°F (0.5°C to 1.5°C)
• Compressor short cycle protection
• Accuracy within ±1°
• Zone system compatible as a master thermostat
• Permanent memory retention
• Fahrenheit/Celsius display option
• Adjustable from 45°F to 90°F (7°C - 32°C)
• Quick wire terminal block
• Automatic heating shutdown if temperature exceeds 94°F (34°C)
9401
®
1
DIGITAL
NON-PROGRAMMABLE
THERMOSTAT
G
E
GAS
ELECTRIC
1 Heat / 1 Cool
User's Manual

Quick Start

Installation
O
OIL

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Summary of Contents for Robertshaw 9401

  • Page 1: Quick Start

    Quick Start Installation 110-1041 Application The Robertshaw 9401 is a single-stage thermostat designed to control 24 VAC gas or electric heating and cooling systems or single-stage heat pump. The 9401 requires the use of a common wire. Features • Summer and winter setpoints •...

  • Page 2: Step 1: Replacing Existing Thermostat

    IMPORTANT SAFETY INFORMATION WARNING: • Always turn off power at main fuse or circuit breaker panel before installing, removing, cleaning, or servicing thermostat. • Read all the information in this manual before installing this thermostat. • This is a 24 VAC low-voltage thermostat. Do not install on voltages higher than 30 VAC.

  • Page 3: Installing

    Contact your local waste management authority for instructions regarding proper disposal of the thermostat. If you have any ques- tions, call Robertshaw technical support at 1-800-445-8299. Step 2: Installing Model 9401 Thermostat NOTE: FOR NEW INSTALLATIONS, MOUNT THERMOSTAT ON INSIDE WALL, FIVE FEET ABOVE THE FLOOR.
  • Page 4 5. Place thermostat against the wall at desired location. Make sure wires will feed through opening (Figure 4) on base of thermostat. 6. Mark placement of mounting holes (Figure 4). Set base aside. Mounting Holes ELEC RESET NON-HP Wiring Opening Figure 4 7.

  • Page 5: Wiring Diagrams

    Wiring Diagrams HEAT ONLY HEAT/COOL 3-WIRE 4-WIRE SINGLE TRANSFORMER SINGLE TRANSFORMER Factory- Installed Factory-Installed jumper jumper Transformer Transformer 24 VAC 120 VAC 24 VAC 120 VAC Heating Heating Control Control Cooling Control Control Control HEAT ONLY 2-WIRE COOL ONLY SINGLE TRANSFORMER 3-WIRE SINGLE TRANSFORMER NOTE: Cut center of factory installed...

  • Page 6: Terminal Function

    TERMINAL LEGEND - 9401 TERM EQUIPMENT TO CONNECT REQ? TERMINAL FUNCTION 24VAC hot connection For input of 24VAC hot side of heat transformer 24VAC hot connection For input of 24VAC hot side of cool transformer 24VAC common connection For input of 24VAC...

  • Page 7: Step 3: Testing The Thermostat

    Step 3: Testing the Thermostat WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF GAS VALVE OR SYSTEM CONTROL TO TEST OPERATION. THIS WILL DAMAGE THE THERMOSTAT AND VOID YOUR WARRANTY. CAUTION: DO NOT SWITCH SYSTEM TO COOL IF THE TEMPERATURE IS BELOW 50°F (10°C).
  • Page 8 7. Put the -ON-AUTO switch into the ON position. The blower fan should turn on. The display will show a and ON. 8. Put the -ON-AUTO switch into the AUTO position. The blower fan should turn off. Step 4: Customizing the Thermostat Settings System Cool: The thermostat controls the cooling.

  • Page 9: Reset

    Temperature Differential The temperature differential is factory set at 1.0°F (.5°C). This means that whenever the room temperature changes by one degree Fahrenheit from the temperature setting, the system will turn on. If the system turns on too often, increase the temperature differential. Changing Fahrenheit (°F) to Celsius (°C), and the Temperature Differential 1.

  • Page 10: Step 5: Troubleshooting

    Step 5: Troubleshooting Symptom Remedy Check wiring (see Installation Thermostat does not turn on system. section). Thermostat turns system on and Increase temperature differential (see Changing the Temperature off too frequently. Differential section). Move fan option switch to either System fan does not operate gas or electric, to match system properly.

  • Page 11: Two-Year Limited Warranty

    Climate Controls NA warrants to the original contractor installer, or to the original consumer user, each new Robertshaw thermostat to be free from defects in materials and workmanship under normal use and service for a period of two (2) years from date of purchase. This...
  • Page 12 NOTES...

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