Rheem codes

Rheem

13

Protect

Flame lost

Dropped after prove.

Walk 13 in Diagnose

8 plates — walk the one on the cabinet

First check

1 Measure µA while it is running

Do not clean first and guess. Series-µA the rod on Rheem R801S during a call. Falling µA is oxide, ground, or a dying flame. A hard drop is often the pressure switch or limit opening, not the rod. Draft after blower-on, rod, gas.

Expect: Typically ≥ 1.0 µA DC on this family — confirm the door card. Rising while running.

The rest of the walkthrough is Diagnose.

On the plates

  • Venting that starves the flame after light-off and blower-on.
  • Manifold sag under load.
  • Rod position and ground.
  • Vent after blower-on, manifold, rod.
  • Draft after blower-on, rod, gas.
  • Chimney draft after blower-on, rod, gas.

Plates that use 13

Same number, other makers

13 on Rheem is not the same code on these plates.