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View Full Version : Fujitsu Hiwall with Plasma ASTB24LDC - timer blinks twice



dennis.angelo
12-04-2010, 09:29 AM
Please help. We have installed a fujitsu Hiwal heat pump but when turning it on the outdoor unit doesn't turn on but the indoor unit works except that it blinks twice and then after 18 secs it blinks twice again.

kiwipinoy2000
12-04-2010, 10:33 AM
have you check the comms cable terminals in between indoor and outdoor unit are in the right terminals?

nike123
12-04-2010, 11:23 AM
Your indoor unit doesn't get signal from outdoor unit at start up. It could be simple as blown fuse in outdoor unit or bad/wrong signal cable/connection or it could be faulty outdoor unit PCB.