Ruud 14

What does Ruud 14 mean?

On Ruud RUTGH condensing tankless water heaters configured for LP (propane) gas, error code 14 means the LP gas is running low. As the propane container nears empty, supply pressure drops below what the burner needs, so the controller displays code 14 on LP models to prompt a refill.

Symptoms

• 14 shown on the remote control LED display (LP models only)
• Burner fails to fire or cuts out under demand
• No or inconsistent hot water
• Low level on the LP gas container gauge

Common causes

• LP (propane) gas container running low or empty
• Insufficient LP supply pressure for the burner
• Container due for refill or replacement

Diagnostic steps

1. 01

   Check the LP gas container level

   Confirm the propane container gauge shows a low level, consistent with this LP-only code.

2. 02

   Refill or replace the LP gas container

   The manual's solution for code 14 is to refill or replace your LP gas container so supply pressure is restored.

3. 03

   Restart the heater

   After refilling, turn off the faucets, turn the heater off, then turn on a hot water faucet and recheck the display. If it persists, unplug for about 30 seconds, plug back in, and restart.

4. 04

   Call for service if the code remains

   If 14 stays displayed with adequate LP gas, note the code and contact a qualified service technician.

When to call a professional

Code 14 is usually resolved by refilling or replacing the propane container. Call a qualified service technician if the code persists after the LP supply is restored, which can indicate a regulator or supply-pressure problem. The manual directs repairs to gas piping, the gas valve, and other safety devices to a qualified service technician and warns against attempting such work yourself.