The alarm/fault is cleared 30 seconds after fault is detected as recov- ered. High Balance Point and Low Balance Point are now listed; adjust the balance point settings and press save. Electric heat was not manually configured configured at the Air Handler Control (AHC) before the icomfort Wi-Fi ™ system discovery process at initial power-up. (Furnace) There is over current in the furnace inducer motor. Step 1: Check all cooling equipment to determine cause of cooling demand. Measure operating pressure (inches w.c.). Do the following to prevent or reduce the risk of heat pump not defrosting issue: Remove leaves and debris from the outdoor coil. System resumes normal operation 5 seconds after fault recovered. (Furnace) The line power voltage wiring is re- versed. There is an internal hardware problem on the control. Also monitors low pressure switch trips. (Furnace / Air Handler) The system has lost communication with the (furnace or air-handier) indoor blower motor. ’’Heat On” is not displayed on the screen. Restricted airflow - Indoor blower is running at a reduced CFM (Cutback Mode - The variable speed motor has pre-set speed and torque limiters to protect the motor from damage caused by operating outside of design parameters (0 to 0.8” e.g.. total external static pressure). Thermostat minimum-off time is activated. [Indicated unif\ is resetting itself. (Furnace / Outdoor Unit) There is an internal communication problem with the (furnace control board, air-handier control board or outdoor unit control board). Frequently Asked Questions. When Lennox furnace troubleshooting, first thing’s first. Our library is the biggest of these that have literally hundreds of thousands of different products represented. Elite Series, Heat Pump, 1.5 Ton, 14 SEER, 1 Stage, R-410A, XP14-018-230 RS Verify operation of equipment in System Test mode. Heating and cooling wires are shorted together. Check to ensure that cooling equipment is not stuck ON. Lost communication with indoor blower motor. - Disconnect the outdoor sensor or discharge sensor. Heat pump technology is straightforward and dependable. The sys- tem will go offline for 60 minutes and try again. (Air Handler) The air-handler’s electric heat is not configured. This alarm/code may appear during a brownout. Unit pressure is above the upper limit. Most heat pump malfunctions relate to … Indoor Unit (furnace or air-handier) will not be used to service a heating demand. Cleared after unresponsive device responds to any inquiry. - Verify the indoor unit has a icomfort communicating control. Reconfigure system. Check combustion blower bearings, wiring and amps. This could be due to seized bearing, stuck wheel, obstruction etc. Measure operating pressure (inches w.c.). Check operation of low pressure switch to see if it is stuck open during a heat call. A. The alarm/fault clears after the issue is corrected. (Furnace) The furnace flame is going out while the furnace is heating. • Wait five minutes for the cooling system to respond. 2) Identify metering device and refrigerant type. - In the installer program select the equipment button and choose System from system device and press edit. Click on outdoor temp dis- play button to toggle ON. Unit does not operate immediately when restarted. Read important note below. Check the heating equipment to find the cause of the problem. That’s why we offer a collection of resources that make it as easy as possible for you to get the answers and support you need. Check for blockage. How does Lennox Thermostat Troubleshooting work? The fault/alarm will clear when the furnace calibrates itself successfully. Press the next button to accept the new device and copy the settings. Ohm reading between i+ and i- anywhere on the RSBus with supply power off should be between 70 and 90 ohms. Check Installer Set-Up Number 170: Heating and/or Cooling Type*. The alarm/fault clears after communication is re-established. (Furnace) There is a problem with the furnace ignition circuit. Recalibrate thermostat to clear. Indoor blower motor over temperature (motor tripped on internal protector). - Manually configure to discover the electric heat section(s) on the air handling. (Stat) The (furnace, air-handier or outdoor unit) is resetting itself. (Furnace / Air Handler) The indoor and outdoor unit capacities do not match. Configuration link(s) not removed on control. (Air Handler) An air-handier configuration jumper is missing. Secondary voltage is below 18VAC. Select cooling system mode to cool the indoor space. This event may occur during a power outage or power fluctuation in the system. Thermostat will display Settings were copied after successfully copying the information to the new control. If this continues for 10 minutes, the thermostat will turn off the (furnace, air-handier or outdoor unit). The alarm/fault clears after the furnace rollout switch is closed. Perfect comfort is something we want you to experience long after you’ve purchased your Lennox ® product. The heat pump condenser and coil are a match. (Furnace) The furnace gas valve relay contact is closed. The alarm will clear after commissioning is complete. During system discovery, the thermostat displays a message Thermo- stat is unable to communicate to system components. The system will only use the heat pump to warm your home. Set System Type (Installer Setup Number 0170) to match the installed heating and/or cooling equipment. LENNOX SERVICE MANUAL FOR ROOM AIR CONDITIONER (Inverter Split-Type) PDF is here. The unit is reporting that its power line and neutral are reversed. Alarm clears 300 seconds after Y1 input sensed OFF. Reset by putting outdoor unit control in test mode or resetting low voltage power. Recalibrate thermostat to clear. HP22-261 heat pump pdf manual download. Check filter and duct system. This may indicate the existence of other alarms/codes. If power to your unit has been interrupted for several hours or more, set the room thermostat selector to the EMERGENCY HEAT setting to obtain temporary heat without the risk of serious damage to the heat pump. Check wall switch and wires for proper connections. Download 788 Lennox Heat Pump PDF manuals. System resumes normal operation 5 seconds after fault recovered. Clear by reconfiguring the system. Mea- sure voltage of neutral to ground to ensure good unit ground. Select 1 Stage AC Unit or 2 Stage AC Unit and press save. Thermostat is calling for heat (Heat ON) or cool (Cool ON); but HVAC system is not operating. (Furnace) The furnace limit switch has been open for more than 3 minutes. 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