Sinclair SCV-EB Series Service Manual page 64

5.20 HF Troubleshooting
5.20.1 Digital display output
5.20.2 Description
 Inverter module board EE prom malfunction
 Heat pump stops running.
 Error code is displayed on the refrigerant system PCB digital tube and user interface.
5.20.3 Procedure
Refrigerant system PCB DIP switch setting
Refrigerant system EEPROM
connected properly
Replace refrigerant system PCB
Notes:
1. Refrigerant system PCB EEPROM is designated IC23 on the refrigerant system PCBs (labeled 29 in Figure 4-2.2 in Part 4, 2.3 "Main PCBs for Refrigerant
System, Inverter Modules and Filter Boards"), designed IC13 on the refrigerant system PCBs (labeled 19 in Figure 4-2.4 in Part 4, 2.2 "Main PCBs for
Refrigerant System, Inverter Modules and Filter Boards"), designed IC23 on the refrigerant system PCBs (labeled 26 in Figure 4-2.6 in Part 4, 2.2 "Main PCBs
for Refrigerant System, Inverter Modules and Filter Boards").
62
HF
is wrong
No
1
is not
No
Yes
Adjust the DIP switch setting
Ensure the EEPROM is connected
Yes
properly