Automatic control apparatus for a heat pump system

Details Automatic control apparatus for a heat pump system Automatic control apparatus for a heat pump system

1980-10-14

1982-06-08

Wayner, William E.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

62160, 165 26, 236 51, 364557, F25B 4900, F25B 1300

Patent

active

043333168

ABSTRACT:
A microprocessor based heat pump control apparatus having a user-operated system console and a system function controller is provided in which normal operating target temperature settings are automatically converted to an expanded operating temperature range (standby operating mode), having preset upper and lower target temperature settings, in response to predetermined operating conditions within the system. The system function controller is preprogrammed to respond to a predetermined number of invalid data signal communications emanating from the user-operated console to switch into the standby operating mode. Provision is made for the user to insert a standby mode instruction at the user-operated console. Provision is also made for the system controller to enter standby during a power-up sequence when invalid user-inserted volatile data is sensed from storage means used to retain the volatile data during the power-off time period.

REFERENCES:
patent: 4154397 (1979-05-01), Carlson
patent: 4274145 (1981-06-01), Hendricks et al.
patent: 4298163 (1981-11-01), Richardson et al.

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