Outdoor Heat Pump User’s Manual / Installation Instructions Two Stage R-410A Split System Premium Model Shown IMPORTANT Please read this information thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit. Keep this literature where you have easy access to it in the future. If a problem occurs, check the instructions and follow recommendations given.
USER INFORMATION Safety Information ........................................ 4 About the Heat Pump ................................... 4 Operating Instructions ................................. 4 Cooling Operation....................................... 4 Heating Operation ...................................... 4 Emergency Heat ......................................... 4 Defrost Operation ....................................... 4 Operating the Heat Pump for Automatic Cooling and Heating ....................
USER INFORMATION SAFETY INFORMATION IMPORTANT: Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.
USER INFORMATION and the unit will defrost itself. This unit features Adaptive Demand Defrost that monitors ambient and coil temperatures to regulate the defrost function accordingly. SYSTEM MAINTENANCE At the beginning of the defrost cycle, both the outdoor condenser fan and compressor will turn off. After approximately 30 seconds, the compressor will turn on and begin to heat the outdoor coil causing the ice and snow to melt.
INSTALLER INFORMATION SAFETY INFORMATION IMPORTANT: Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage. Read the following instructions completely before performing the installation.
GENERAL INFORMATION Split System Heat Pump units are designed for use with a wide variety of fossil fuel furnaces, electric furnaces, air handlers, and evaporator coil combinations equipped with variable speed blowers. This unit has been designed and tested for capacity and efficiency in accordance with A.R.I. Standards. This unit will provide many years of safe and dependable comfort, providing it is properly installed and maintained.
Roof Mount WARNING: To avoid the risk of property damage, personal injury, or death, it is the installer’s responsibility to ensure that whatever means are used to move or lift the unit are safe and adequate: Keep the unit in an upright position at all times. The method of mounting should be designed so as not to overload roof structures or transmit noise to the interior of the structure.
• Connect the line-voltage leads to the terminals on the contactor inside the control compartment. • Use only copper wire for the line voltage power supply to this unit (Table 1). Use proper code agency listed conduit and a conduit connector for connecting the supply wires to the unit. Use of rain tight conduit is recommended. • See the unit wiring label for proper high and low voltage wiring. Make all electrical connections in accordance with all applicable codes and ordinances.
again after the discharge pressure decreases to 460 psig. NOTE: When the switch opens and then closes, there will be a 3 minute short cycling delay before the outdoor unit will energize. Under normal conditions the switch is closed. Comfort AlertTM Diagnostics Module The Comfort AlertTM Diagnostics Module is a breakthrough innovation for troubleshooting heat pump and air conditioning system failures. The module installs easily in the electrical box of the outdoor unit near the compressor contactor.
Outdoor Fan Motor If unit utilizes a 2-speed condenser fan motor, this motor will operate on low speed when in low cooling, and on high speed when in high cooling. A relay within the control area switches the fan motor from low to high speed using the call for high cooling as the trigger. Other models that utilize BLDC fixed torque variable speed fan motors will not require a relay.
verify system operation and compatibility with the heat pump. Refer to the installation instructions for this equipment and perform a functional checkout in accordance with the manufacturer’s instructions. Indoor Blower 1. Turn the fan mode to ON. Verify that the indoor blower is operating and that airflow is not restricted. 2. Set the fan mode back to AUTO. Blower will operate at a decreased speed on continuous fan. Short Cycle Protection 1.
• If the REMOVE FOR NO DELAY jumper is installed, the compressor will energize immediately following a 30-second delay. Note: If the Y2 thermostat input is energized (2 - stage system), the second stage will turn on. If the above steps will not initiate a defrost, replace the defrost board. Anti Short Cycle Timer Test The 3-minute time delay feature can be bypassed by shorting the TEST pins together.
Cooling Charging Charts 475 Remove refrigerant when above curve 450 Liquid Pressure (psig) 425 400 375 350 325 300 Add refrigerant when below curve 275 250 70 75 80 85 90 95 100 105 110 115 120 125 Liquid Temperature (° F) Figure 4. Charging Chart for 2 Ton Units 500 475 Remove refrigerant when above curve Liquid Pressure (psig) 450 425 400 375 350 325 300 275 Add refrigerant when below curve 250 70 75 80 85 90 95 100 105 110 115 120 125 Liquid Temperature (° F) Figure 5.
Cooling Charging Charts (continued) 500 475 Remove refrigerant when above curve Liquid Pressure (psig) 450 425 400 375 350 325 300 Add refrigerant when below curve 275 250 70 75 80 85 90 95 100 105 110 115 120 125 Liquid Temperature (° F) Figure 6.
Heating Charging Chart 400 Liquid Pressure (psig) 375 Remove refrigerant when above curve 350 325 300 275 250 225 Add refrigerant when below curve 200 50 55 60 65 70 75 80 Liquid Temperature (° F) Figure 8.
TROUBLESHOOTING Status LED Green “POWER” Red “TRIP” Yellow “ALERT” Flash Code 1 Yellow “ALERT” Flash Code 2 Status LED Description Status LED Troubleshooting Information Module has power Supply voltage is present at module terminals Thermostat demand signal Y is present, but compressor is not running • • • • • • • • Long Run Time Compressor is running extremely long run cycles • Low refrigerant charge • Evaporator blower is not running — Check blower relay coil and contacts — Check blower motor c
TROUBLESHOOTING - CONTINUED Status LED Yellow “ALERT” Flash Code 3 Status LED Description Short Cycling / Compressor is running only briefly Status LED Troubleshooting Information • • • • Thermostat demand signal is intermittent Low line voltage (contact utility if voltage at disconnect is low) Excessive liquid refrigerant in compressor Compressor bearings are seized • Run capacitor has failed • Low line voltage (contact utitlity if voltage at disconnect is Yellow “ALERT” Flash Code 4 Locked Rotor
TROUBLESHOOTING - CONTINUED Miswired Module Indication Recommended Troubleshooting Action Green LED is not on, module does not power up • Determine if both R & C module terminals are connected. • Verify voltage is present at module’s R & C terminals. Green LED intermittent, module powers up only when compressor runs • Determine if R & Y terminals are wired in reverse. • Verify modules R and C terminals have a constant source.
INSTALLER: PLEASE LEAVE THESE INSTALLATION INSTRUCTIONS WITH THE HOMEOWNER. ¢708868b¤ O’Fallon, MO 708868A 708868A(Replaces 7088680) Specifications and illustrations subject to change without notice t incurring obligations. Printed in U.S.A.
