REMKO BL 262 DC - Manual (Page 41)

Error E1: Indoor/outdoor units communication error
Power off, then turn on the unit 5 seconds later
(reconnect the power wire). Is the erorr still dis-
playing after several minutes?
YES
Check all the wirings between indoor and out-
door, indoor PCB and outdoor PCB following
the wiring diagram. Are all the wirings con-
nected correctly?
YES
Is -24V
(Vs is the voltage between S and N of outdoor
unit).
NO Is the wiring to the indoor PCB connected cor-
rectly?
YES YES
Is the wiring to the outdoor PCB connected cor-
rectly?
Change the indoor PCB.
YES
Change the outdoor main PCB.
NO
Power on. Is the error extinguished?
Error E2: Zero crossing detection error
Check if the connections and power supply is
normal?
NO Correct the connections. Turn on the unit when
the power supply is good.
YES
Indoor PCB is defective. Replace indoor PCB.
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