Thermostat Wiring Error - Samsung AM017HN1DEH/EU Service Manual

4-4-97 Thermostat Wiring Error

Outdoor unit display
Indoor unit display
Criteria
Cause of problem
1. Inspection Method
Check the wiring of Thermostat.
Is Thermostat at the same time
Only one wiring of 230V or 24V.
Samsung Electronics
↔
XXX (xxx : Address of Indoor Unit that error occurred)
• Heating / Cooling signal of Thermostat at the same time input.
• Thermostat wiring error of xxx Hydro Unit.
230V and 24V wiring?
Yes
19 20
C
N
Cooling
23 24
C
N
Cooling
No
Check the Cooling / Heating wiring has been
duplicates to each Thermostat.
22
21
230V Themostat
N
H
Heating
25 26
24V Themostat
N
H
Heating
Troubleshooting
421