Sunlight Supply Samsung Programmable Thermostat for Split Systems - Manual (Page 111)

Samsung Electronics 12-48
12-2-15 DC Link Over voltage/ Low voltage error
1. Checklist :
1) Is the power voltage normal?(Lightning, Power interruption etc.)
2) Is AC Power cable connection normal?(Detaching the wire)
2. Troubleshooting procedure
Yes
No
No
No
No
Yes
Yes
Yes
Push the center bar of M/C and mesure the resis-
tance of each contact.
Yes
No
Exchange M/C
Check and reconnecting the
AC power cable wire
Is the AC Power cable connection to the outdoor
unit terminal block good?
Check and reconnecting the reactor wire
at the TAB terminal
Is the connection of reactor terminal good?
Replace the blown FUSE Are the FUSEs on EMI PCB blown?
Is each contact resistance normal?
(less than 0.1ohm)
Does the error reappear frequently
The cause of this error may be power source
trouble as like power interruption.
Check the power source.
Exchange INVERTER PCB
12-2-16 The others
1. Capacity miss match
– Check again the indoor unit option code.