Diagnostic monitor system for heat pump protection

Details Diagnostic monitor system for heat pump protection Diagnostic monitor system for heat pump protection

1981-11-06

1984-08-07

Wayner, William E.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

236 94, 324417, F25B 4900

Patent

active

044635710

ABSTRACT:
A method and apparatus for monitoring the protective circuit associated with a heat pump system wherein both the high pressure switch on the condensor side of the compressor and the low temperature switch on the evaporator side of the compressor are continuously monitored by a low voltage rectifier circuit that relays a signal to a second lock-in relay circuit which in turn initiates and maintains a signal light indicating which switch caused the heat pump system to turn down. Such a device is an inexpensive yet reliable method of diagnosing problems and dangerous conditions with minimum risk to the heat pump.

REFERENCES:
patent: 4295129 (1981-10-01), Cade

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