Service Manual Bosch Climate 5000 AA Series Split Type Ductless Air Conditioner / Heat Pump | 23
Bosch Thermotechnology Corp. | 02.2018
Data subject to change
8.1 Indoor unit error display
Operation lamp Timer lamp Display LED STATUS
1 time
X E0 Indoor unit EEPROM parameter error
2 times
X E1 Indoor / outdoor units communication error
3 times
X E2 Zero-crossing signal detection error
4 times
X E3 Indoor fan speed has been out of control
5 times
X E4 Indoor room temperature sensor T1 open circuit or short circuit
6 times
X E5 Evaporator coil temperature sensor T2 open circuit or short circuit
7 times
X EC Refrigerant leakage detection
1 times
{
F0 Overload current protection
2 times
{
F1 Outdoor ambient temperature sensor T4 open circuit or short circuit
3 times
{
F2 Condenser coil temperature sensor T3 open circuit or short circuit
4 times
{
F3 Compressor discharge temperature sensor T5 open circuit or short circuit
5 times
{
F4 Outdoor unit EEPROM parameter error
6 times
{
F5 Outdoor fan speed has been out of control
1 times
P0 IPM malfunction or IGBT over-strong current protection
2 times
P1 Over voltage or over low voltage protection
3 times
P2 High temperature protection of IPM module or compressor top
4 times
P3* Outdoor ambient temperature too low.
5 times
P4 Inverter compressor drive error
6 times
P5 Indoor units mode confl ict (multi-zone ONLY)
Table 12
{ - light
X - off
- fl ash
* P3
1. In heating mode, when the outdoor temperature is lower than -13°F (-25℃)
for 1 hour, the indoor unit display error code P3.
2. If the outdoor temperature is higher than -7.6°F (-22℃) for 10 minutes and
compressor stop for 1 hour or outdoor temperature is higher than 23°F (-5℃)
for 10 minutes, then the unit will return to work.
* Fault Symptom: The display board shows a garbled code or a code that is not an
error code found in the service manual nor a temperature
reading.
Troubleshooting:
Use the remote controller. If the unit does not respond to the remote, the indoor PCB
needs to be replaced; if the unit does respond, then the display board needs to be
replaced.
If you see an error code not displayed in Table 12, contact the
manufacturer as the error displayed is for development purpose only.
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