
SVC 820-Tankless Gas Trouble Shooting Manual Page |
7
7
Flow Chart
No
Flame Failure
Ignition Failure
10 Warning Code Flashing
05 Warning Code Flashing
Yes
Yes
No
No
Decrease of
Fan Motor
Ventilation
Imperfect
Combustion
Alarm
Attempt to Re-Ignite
11
12
Yes
1-2 Ignition
Attempts
Condensation Not Draining
29: Condensing Only
OHL Activated
14
Outlet water temperature
too high
16
Hot Water > 207 Degrees F
for more than 15 seconds
15
Heat Exchanger > 207
Degrees F for more than 15
seconds
15
Heat Exchanger
Outlet Temp Too
Low
Ambient
Thermistor
Outlet Thermistor
Heat Exchanger
Thermistor
Inlet Thermistor
29
34
33
32
31
Trouble with
Thermistor(s)
PGFR – Gas Control
Valve
Blower Motor
Water Control Body
Bypass Assembly
35
52
61
65
66
Gas Control Valve
Communication
Trouble – Remote
Control
Blower Motor
Current Not
Detected
Flame Rod
71
76
79
13
Next Page
2 – Monitoring Sequence: while unit is in
operation
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 ...