Ignition Control, Pressure Switch | Lennox International Inc 15GCSX

Ignition Control

Figure 14

Ignition Control LED Codes

The ignition control LED flashes codes which indicate normal or abnormal operations:

Slow Flash −− Normal operation, no call for heat. One flash per second.

Fast Flash −− Normal operation, call for heat. Two flashes per second.

Steady Off −− Internal failure or no power. (Micro−controller failure; self−check.) Steady On −− Internal control failure. (Micro−controller failure; self−check).

Code 2 −− System lockout −− Failed to detect or sustain flame.

Two flashes in 1 second with a 1−second pause. Code 3 −− Pressure switch open with inducer on or closed with inducer off.

Three flashes in 1−1/2 seconds with a 1−second pause. Code 4 −− High limit /or rollout switch open.

Four flashes in 2 seconds with a 1−second pause. Code 5 −− Flame sensed while gas valve de−energized. Five flashes in 2−1/2 seconds with a 1−second pause. Code 6 −− Roll out switch is open.

Six flashes in three seconds with a one−second pause.

supply airflow, occurs. The main gas valve is closed. The circulating air blower will continue to operate until the blower off delay period has elapsed.

Pressure Switch

If the combustion air inducer motor should fail or if the vent system is blocked, the pressure switch prevents the gas valve from being energized.

Spark Electrode and Flame Sensor Rod

The spark electrode and flame sensor rod are part of the burner assembly. The spark electrode is typically located on the far−left burner. The flame sensor rod is typically located on the far−right burner. If the ignition control does not receive a signal from the flame sensor indicating that the burners have established flame, the main gas valve will close after the 10−second ignition trial period built into the ignition control.

Rollout Switch

The switch is located above the main burners. In the event of a sustained main burner rollout the main gas valve is closed. To reset, push the button on top of the switch.

Limit Control

This control is located inside the heating compartment and is designed to open at abnormally high air temperatures. It resets automatically. The limit switch operates when a high temperature condition, caused by inadequate blower

Auxiliary Limit (−42, −48 & −60 units only)

This control is located in the side of the circulating air blower housing. If the circulating air blower fails to operate, the temperature rises and opens the auxiliary limit. The main gas valve closes. This control resets automatically.

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Gas Packaged Units, 15GCSX specifications

Lennox International Inc. is a leading name in the HVAC industry, renowned for its innovative and energy-efficient products. Among its featured offerings are the 15GCSX Gas Packaged Units, specifically designed to provide reliable heating and cooling performance for residential and light commercial applications.

The 15GCSX models stand out with their impressive efficiency ratings, achieving up to 14 SEER (Seasonal Energy Efficiency Ratio) for cooling and 81% AFUE (Annual Fuel Utilization Efficiency) for heating. This ensures that users can enjoy a comfortable indoor environment while also managing energy costs, making them an environmentally friendly choice.

One of the key features of the 15GCSX is its compact design, allowing for easy installation in tight spaces. This is particularly beneficial for urban settings where space can be at a premium. The unit’s all-in-one design integrates both heating and cooling capabilities, eliminating the need for separate systems and simplifying maintenance.

The 15GCSX Gas Packaged Units utilize advanced technologies to optimize performance. Equipped with Lennox’s proprietary iComfort technology, these units can connect to smart thermostats, allowing users to monitor and adjust settings remotely. This innovation enhances energy savings and provides users with full control over their indoor climate, contributing to enhanced comfort levels.

In terms of durability, the 15GCSX models feature a robust construction, complete with weather-resistant cabinet materials designed to withstand the elements. The unit’s stainless steel heat exchanger is built for longevity and efficiency, further enhancing the overall reliability of the system.

Noise reduction is another critical consideration in the design of the 15GCSX units. They come equipped with a specially designed, quiet-running fan and compressor that help to minimize operational sound levels, ensuring a peaceful indoor environment during use.

In conclusion, the Lennox 15GCSX Gas Packaged Units represent a high-quality solution for efficient heating and cooling needs. With their combination of advanced technology, energy efficiency, compact design, and durability, these units are an excellent choice for homeowners and businesses seeking reliable climate control. The integration of smart features and silent operation further solidifies their position as a preferred option in the HVAC market.