Lennox International Inc. LB-83114C manual

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Table of contents for the manual

  • Page 1

    HEAT PUMP KITS AND ACCESSORIES ©1993 Lennox Industries Inc. 502,673M Dallas, Texas 9/93 Supersedes 3/92 Litho U,S,A. SOLID STATE DEFROST REPLACEMENT BOARD INSTALLATION INSTRUCTIONS FOR SOLID STATE DEFROST REPLACEMENT BOARD LB-83114C (61H42) USED ON HP7-1, -2, HP8, CliP9 AND CliP10 SERIES UNITS ,/SHIPPINGANDPACKING _ : : :: : ] Package 1 of 1 conta[...]

  • Page 2

    TOP VIEW FRONT VIEW REPLACEMENT BOARD _J f REMOVE EXISTING BOARD Use existing hole to install replacement board I ®1 DEFROST TIME INTERVAL JUMPER 9O 6O 0 _o RST HLD 24V OUT COM _ INTERNAL JUMPER Drill new hole into control box panel FIGURE 1 _] HIGH PRESSURE SWITCH LOSS OF , CHARGE ._ SWITCH DEFROST BOARD COMPRESSOR CONTACTOR RST 0 HLD 24V * _)- O[...]

  • Page 3

    The defrost control is a solid state control manufactured by Hamilton Standard.The control provides automaticswitching from normal heating operation to defrost mode and back. The defrost controlcontains a solid state timer which switches an externa] defrost relay through 1/4" male spades mounted on the control'scircuit board.Thecontrol en[...]

  • Page 4

    DEFROST CONTROL TROUBLESHOOTING FLOWCHART START HERE I Check control transformer primary and secondary voltages. Repair or replace as necessary. I Turn off power to unit. I Check defrost sensor. Is sensor temperature or pressure acti- vated? For help in determining, re- fer to operation of control in unit installation instructions and unit wiring d[...]