Troubleshooting - Heat Controller SMA Service Manual

10.2 Troubleshooting

For 9K and 12K :
Failure phenomenon
Indoor fan speed has been out of control for over 1 minute
Indoor room temp. or evaporator sensor is open circuit or short circuit
Over current protection of the compressor occurs 4 times
EEROM error
Indoor unit communication error
Outdoor condenser temperature sensor is open circuit or short circuit
r OFF
☆ Flash at 5Hz
For 18K and 24K:
Failure phenomenon
Over current protection of the compressor occurs 4 times
Indoor room temp. sensor is open circuit or short circuit
Temp. sensor on indoor evaporator is open circuit or short circuit
Temp. sensor on outdoor condenser is open circuit or short circuit
(without for cooling only models)
Outdoor unit protects(outdoor temp sensor, phase order etc)
EEROM error
Indoor unit communication error
Service manual
Heat Controller, Inc. Jackson, MI 49203
- 41 -
Operation Timer
lamp lamp
☆
X
☆
On
☆
X
☆
On
☆ ☆
illuminate simultaneously
☆ ☆
illuminate alternately
Operation Timer Defrosting
lamp lamp lamp
☆ ☆ ☆
☆
X X
☆
X X
☆
X X
☆
X X
☆
X X
X X X
Auto
lamp
☆
X
X
X
☆
☆
☆