Welcome to Vese Heating & Cooling’s guide on how to read error code, York Furnace. As experts in the field, we are dedicated to helping you understand the lockout codes of York gas furnaces, enabling you to troubleshoot and address common operating status issues.

 

**Notice this article was created for trained and licensed HVAC specialists. If You are not confident call an HVAC specialist!!

 

Most York gas furnaces feature a control board within the furnace blower compartment. This control board functions as a diagnostic tool, utilizing flashing lights to indicate the operating status of the furnace. These signals are invaluable in diagnosing potential issues that may arise.

 

**Decoding the Signals: Interpretation of Lockout Codes**
**Slow Green:**	Normal Operation – No Call for Heat
**Slow Amber:**	Normal Operation – Call for Heat
**Steady On Red:**	Control Failure – Solution: Replace control board
**Rapid Red:**	Twinning Error, Incorrect 24V Phasing    – Solution: Try switching polarity at transformer.
**Rapid Amber:**	Low Flame Sense Current    – Solution: Clean flame sensor
**4 Amber:**	Y Present without G    – Solution: Low voltage wiring problem
**1 Red:**	Flame Present with Gas Off    – Possible Causes: Stuck gas valve, shorted flame sensor, faulty control
**2 Red:**	Pressure Switch Stuck Closed    – Possible Causes: Bad pressure switch, inducer fan relay stuck on
**3 Red:**	Pressure Switch Stuck Open    – Possible Causes: Bad pressure switch, bad inducer fan, bad inducer fan relay, blocked or restricted vent, condensate drainage issue
**4 Red:**	Limit Switch Open / Open Fuse    – Possible Causes: Bad limit, low airflow, over-fired
**5 Red:**	Rollout Switch Open / Open Fuse    – Possible Causes: Bad switch, cracked heat exchanger, bad inducer motor, over-fired
**6 Red:**	Pressure Switch Opened 4 Times    – Possible Causes: Bad pressure switch, bad inducer fan, blocked or restricted vent, condensate drain issue
**7 Red:**	Ignition Lockout due to 3 Retries    – Possible Causes: Bad igniter, dirty flame sensor, no gas flow
**8 Red:**	Flame Signal Lost 5 Times    – Possible Causes: Dirty flame sensor, combustion air problem
**9 Red:**	Grounding or Line Polarity Fault    – Solution: Try reversing transformer power
**10 Red:**	Flame Sensed with No Call for Heat    – Possible Causes: Stuck gas valve, shorted flame sensor, faulty control
**11 Red:**	Limit Switch Open    – Possible Causes: Bad limit, blower failure
**12 Red:**	Open Igniter Circuit    – Possible Causes: Bad igniter, loose wiring to igniter
**13 Red:**	2nd Stage Pressure Switch Stuck Open    – Possible Causes: Bad pressure switch, bad inducer fan, blocked or restricted vent, condensate drain issue

**Retrieving and Clearing Fault Codes**

 

To retrieve fault codes, push and release the LAST ERROR button with no thermostat call. The LED will flash up to 5 stored fault codes, beginning with the most recent. If there are no codes in memory, the LED will flash two green flashes. To clear fault codes, push and hold the LAST ERROR button for at least five seconds. The LED will flash three green flashes when the memory has been cleared.

 

We Know How to read error code York Furnace, call Vese

Vese Heating & Cooling is pleased to provide services for YORK products, which are noted for their high quality, innovative design, and energy efficiency. When looking for high-quality HVAC systems, YORK offers a wide range of heating, cooling, and IAQ equipment that have been precisely designed for dependable performance and long-lasting comfort. YORK HVAC systems have constantly been recognized as a top-class by prestigious organizations such as Consumers Digest and the Environmental Protection Agency (EPA).
When you choose YORK for your Edmonton, AB HVAC needs, you can rely on industry-certified HVAC systems with innovative features and user-friendly interfaces that improve the comfort of your home or business. Your comfort is our top focus at YORK. Whether it’s cooling or heating, YORK has a system to meet your needs and your budget.

.