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Page SVC 820 Tankless Gas Trouble Shooting Manual
68
35 – Error Code
Explanation:
Improper Thermistor connection. Unit has
four Thermistors; one or more possibly has a poor
connection or not connected in proper location.
Diagnostic Checks:
•
Inlet, Heat Exchanger, Outlet, and Ambient
Thermistors.
THERMISTORS DIAGNOSTICS:
Turn power OFF. Remove connector “R” on Control
Board. Measure the resistance for all temperature
sensors (step 3). IF temperature sensor FAILS the
resistance check, go to the appropriate Error Code for
diagnostics. IF sensors test ‘OK’ continue to next page.
Turn power OFF. Remove and reinsert connector “R”
on Control Board. Attempt to operate unit again. IF
35 Error Code does NOT display, unit had a loose
connection.
1
2
3
Black #3 & Blue #7 Wires: Ambient Thermistor
64DV; 84DV; 95DV: 7K – 23K Ohms
64X; 84X; 95X: 2K – 72K Ohms
H95DV; H95X: 2K – 72K Ohms
Black #3 & White #6 Wires:
Inlet Thermistor
7K – 23K Ohms. Error Code 31
Black #3 & Yellow #5 Wires:
Heat Exchanger Thermistor
7K – 23K Ohms. Error Code 32
Black #3 & Red #4 Wires:
Outlet Thermistor
7K – 23K Ohms. Error Code 33
Black #3 & Blue #7 Wires:
Ambient Thermistor
Refer to Data Table. Error Code 34
Содержание PH2-20R OFN
Страница 158: ...158 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS...
Страница 159: ...159 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS...
Страница 160: ...160 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS...
Страница 162: ...162 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF...
Страница 163: ...163 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF...
Страница 164: ...164 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF...
Страница 166: ...Schematic Disassembly PHH 32RDV PHH 25RDV 166...
Страница 167: ...Schematic Disassembly PHH 32RDV PHH 25RDV 167...
Страница 169: ...169 Schematic Disassembly PHH 32ROF PHH 25ROF...
Страница 170: ...170 matic Disassembly PHH 32ROF PHH 25ROF...