i3 hephestos repetier diamond

In file included from Repetier.h:198:0,
                 from Extruder.cpp:22:
Configuration.h:170:29: error: ‘TEMP_3_PIN’ was not declared in this scope
 #define EXT2_TEMPSENSOR_PIN TEMP_3_PIN
                             ^
Repetier.h:425:38: note: in expansion of macro ‘EXT2_TEMPSENSOR_PIN’
 #define EXT2_ANALOG_CHANNEL ACCOMMA1 EXT2_TEMPSENSOR_PIN
                                      ^
Repetier.h:512:73: note: in expansion of macro ‘EXT2_ANALOG_CHANNEL’
 #define  ANALOG_INPUT_CHANNELS {EXT0_ANALOG_CHANNEL EXT1_ANALOG_CHANNEL EXT2_ANALOG_CHANNEL EXT3_ANALOG_CHANNEL EXT4_ANALOG_CHANNEL EXT5_ANALOG_CHANNEL BED_ANALOG_CHANNEL THERMO_ANALOG_CHANNEL KEYPAD_ANALOG_CHANNEL}
                                                                         ^
Extruder.cpp:44:47: note: in expansion of macro ‘ANALOG_INPUT_CHANNELS’
 const uint8 osAnalogInputChannels[] PROGMEM = ANALOG_INPUT_CHANNELS;
                                               ^