Bosch Heat Pump: M15, M18, M20 Re: Parameter Point Check Table To display system parameters, press the “Check” button to index through the series of parameters available. The first time you press the “Check” button, it will display the sequence, and after 1 second it will display the value of...

Bosch Heat Pump: M15, M18, M20 Re: Fault Codes / Status Codes Fault Code Display Fault Code Fault Description C3 The coil sensor (T3) is seated fault in Cooling E4 Temperature Sensor Fault (T3, T4, T3L, T5 or TF) E5 High or Low Voltage Protection E6...