Rheem 64DV - Error Code

70 | P a g e S V C 8 2 0 ( P ) P o c k e t M a n u a l
70
52 – Error Code
Explanation: PGFR malfunction. The PGFR is
the only modulating valve in the gas control valve.
Diagnostics: PGFR (Proportional Gas Flow Regulator)
Connector Location
On Page 14
Turn Power OFF.
Remove and reinsert connector R.
Locate PGFR valve on lower right side of
unit (round black piece on bottom of gas control valve).
Remove and reinsert Molex connectors with Red and Black
wires on PGFR.
Operate unit.
While viewing through sight glass,
determine if flame is visible.
Unit had a loose connection
Gas control valve is OK.
_______________________
IF 52 – Error Code appears
and flame IS visible:
Replace gas control valve
YES
Continue diagnostics on
next page.
NO
PGFR