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Nu-Way XGN 450-3000 MBC Microprocessor Burner Control

Nu-Way XGN 450-3000 MBC Microprocessor Burner Control code 44H

The burner locks out because the system detected a leak in the second gas valve.

Safety first. This code involves a gas, flame or electrical hazard. Do not keep resetting it. Leave burner, gas train and high voltage work to a qualified technician. WERCS answers 24/7 at (877) 489-3727.
Code
44H
Name
44H
Controller
Nu-Way XGN 450-3000 MBC Microprocessor Burner Control
Type
Gas valve proving
What it does
Lockout: the control shuts down and stays off until it is reset
Risk
RED Specialist territory
Reset
Needs a manual reset
Source
The manufacturer's manual (subscribers see which manual and page)

Updated July 23, 2026

How to fix it

Subscribers get:

  • What to do next, in plain words
  • Which manufacturer manual it comes from, linked
  • The 3 common causes listed for this code
  • The step by step check for this problem, one check at a time
  • Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)

Questions about this code

What does Nu-Way XGN 450-3000 MBC Microprocessor Burner Control code 44H mean?

The burner locks out because the system detected a leak in the second gas valve.

Is Nu-Way XGN 450-3000 MBC Microprocessor Burner Control code 44H dangerous?

It is graded red, specialist territory: it involves a burner, gas, flame or safety lockout, so leave the repair to a qualified technician.

How do I fix Nu-Way XGN 450-3000 MBC Microprocessor Burner Control code 44H?

The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.

Other Nu-Way XGN 450-3000 MBC Microprocessor Burner Control codes

All 16 Nu-Way XGN 450-3000 MBC Microprocessor Burner Control codes · Every fault code