Rheem Guardian PowerVent - DIAGNOSTIC FLASH CODES; General Diagnostic System Overview

Guardian PowerVent Training Manual SVC900; Rev 1
Page 16
ECO High Limit:(>200
0
F)
The high limit switch opens
after flame is established.
That means the water in the
tank got over 200
0
F.
The pilot valve, main valve,
and spark ignition are turned
off, but the blower will
remain on. LED flashes 4/2.
The ECO has a one-time use.
Table 2 – Sequence of Operations
N O T E S