Temp Check
TEMP CHECKError Diagnostics:
In adjusting temp switch from 32 °C to 17 °C, 11 V is out-putted from FATC connector A-9 terminal, 0 V is supplied for A-22 terminal and temp motor works in direction of COOL. In adjusting temp switch from 17 °C to 32 °C, 11 V is outputted from FATC connector A-22 terminal, 0 V is supplied for A-9 terminal and temp motor works in direction of WARM. When temp actuator has to move to a certain location for its automatic control, temp feedback signal terminal moves equally in temp actuator and informs controller of location of temp actuator through FATC connector B-10 terminal. Comparing original value with inputted value, it works until they are same. If 4.9 V and more is inputted in B-10 terminal, it is regarded as disconnection. If 0.1 V and less is inputted in B-10 terminal, it is regarded as short-circuit. In the case of disconnection or short-circuit as a result of self-diagnostic, substitute control is carried out as follows.
- If setup temperature is 17 °C to 24.5 °C, set to MAX COOL.
- If setup temperature is 25 °C to 32.0 °C, set to MAX WARM.