Laserfiche WebLink
11.3 Defrost Control <br /> Defrost controls have a selectable termination tem- <br /> perature.As shipped, defrost will terminate at 470F. Defrost Board Detail <br /> For a higher termination temperature, cut Jumper <br /> J2 to achieve 70OF. See Service Facts shipped in D5 J 03�`' C2t —651-I u J3 <br /> the outdoor unit for more information. °'= 02n "'[ Y9 019 D2 _ Rs9 <br /> [ l [ C19C 7=xl p^1�nnC C ID <br /> R31 () [ ]R55 <br /> R30^C^RH 3 R3J C uCC2D <br /> Pin Identification on J5 (See Illustration) J9 C6��R5 uuouuuu a9� o�7 <br /> 1. TEST—COMMON Shorting to FRC_DFT 0 �nm L oe J 5� <br /> (Shorting ymyC7n �'IIII0111111110 �u�u a H9� uR5r C29� <br /> causes the control to initiate Forced Defrost. R131 �u 3^ Sao <br /> RL1[ ] rQC23 <br /> '" R65r Ocoxr�e .. p67u ,,Leaving this pin open results in the normalK11 J2U°22 <br /> -I-I�1 i2�-U[ C2 R6[ r <br /> mode of operation.) �` I ' C [C � +3.3U0p[ <br /> t S2 n R33 LJ CIO C9 <br /> 2. FRC_DFT = Forced Defrost Short TEST_ -IIM D27 C22 <br /> ( • up21�16 RJ2 nn U3 pJ9 pl2 ^ U A <br /> COMMON to this pin for two (2) seconds to ' ��n s=x j C21 <br /> Tus� U =RH°C 12 L <br /> initiate a forced defrost. Remove the short • C �p7R61 p92 pl " O <br /> after defrost initiates.) R62 <br /> J8 � � � Je <br /> C11 COIL T ° J2 <br /> Q o 0 0 U <br /> Defrost Control Checkout © —2 ��� <br /> veV <br /> Normal operation requires: TER"S0F' COIL T ALB T <br /> • Status LED on board flashing 1 time/second 1f R <br /> in standby or 2 times/second with a call for / \ <br /> heating or cooling. Jumper J2 J5 Test Pins <br /> • 24V AC between R & B <br /> • 24V AC between Y,YO & B with unit operating <br /> • Defrost initiation when FRC_DFT pin is shorted to TEST COMMON pin. <br /> If a defrost control problem is suspected, refer to the service information in control box. <br /> 14 18-BC108D1-1 B-EN <br />