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Page SVC 820 Tankless Gas Trouble Shooting Manual
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52 – Error Code
Explanation:
PGFR (Proportional Gas Flow Regulator)
malfunction. The PGFR is the only modulating valve in the
Gas Control Valve.
Diagnostic Checks:
•
PGFR
PGFR DIAGNOSTICS:
Locate PGFR valve on lower right of unit. Remove and
reinsert Molex connector with red wire and Molex
connector with black wire on PGFR. Attempt to
operate unit again.
Turn power OFF. Remove and reinsert connector “R”
on Control Board.
1
2
3
IF 52 Error Code does NOT display,
unit had a loose connection.
IF 52 Error Code IS displayed,
continue to diagnostic chart on next
page.
PGFR
Control Board
PGFR
Molex Connectors
Summary of Contents for PH2-20R DVSN
Page 158: ... 158 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS ...
Page 159: ... 159 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS ...
Page 160: ... 160 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS ...
Page 162: ... 162 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF ...
Page 163: ... 163 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF ...
Page 164: ... 164 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF ...
Page 166: ...Schematic Disassembly PHH 32RDV PHH 25RDV 166 ...
Page 167: ...Schematic Disassembly PHH 32RDV PHH 25RDV 167 ...
Page 169: ... 169 Schematic Disassembly PHH 32ROF PHH 25ROF ...