Dungs VPS 504 Valve Proving System
Dungs VPS 504 Valve Proving System Red signal lamp lit: Red signal lamp lights
The test section is leaky or failed to reach the required pressure increase, which faults the system and stops the burner.
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
- Red signal lamp lit
- Name
- Red signal lamp lights
- Controller
- Dungs VPS 504 Valve Proving System
- Type
- Gas valve proving
- What it does
- Lockout: the control shuts down and stays off until it is reset
- Risk
- RED Specialist territory
- Reset
- Clears on its own when the condition goes away
- 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 6 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 Dungs VPS 504 Valve Proving System Red signal lamp lit mean?
The test section is leaky or failed to reach the required pressure increase, which faults the system and stops the burner.
Is Dungs VPS 504 Valve Proving System Red signal lamp lit 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 Dungs VPS 504 Valve Proving System Red signal lamp lit?
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 Dungs VPS 504 Valve Proving System codes
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