Friedrich 2001 Hazardgard SH14J30A-1, Service Manual

Page: 7 / 20

7
CONTROL ASSEMBLY — PRINTED CIRCUIT BOARD
ITEM
ITEM ITEM
ITEM
NO. NO. NO. NO.
DESCRIPTION
DESCRIPTION DESCRIPTION
DESCRIPTION
NO.
NO. NO.
NO.
REQ REQ REQ REQ
1 SEE TRIAC MANUFACTURER’S TABLE 1
2 .1 MFD. CAPACITOR .630 V DC MIN. 2
3 100 OHMS RESISTOR 1/2 WATT 2
4 470 OHMS RESISTOR 5 WATT 2
5 .0265 A FUSE (1/16 AMP) (UL LISTED) 2
6 MALE 1/4" QUICK CONNECT 10
7
TECCOR HT-32. -35, GT-32, -35 OR HUTSON D-30
DIAC
2
8 SIEMENS S20K275 OR G.E. V275LA40A VARISTORS 2
TRIAC
With the system switch in the "On" position
and the thermostat closed, current flows
through the control components of the
printed circuit board to the TRIAC causing it
to switch on, starting the compressor. If the
compressor fails to start and the compressor
has been tested by the direct start method,
and the thermostat tests satisfactorily,
replace both the TRIAC and the printed
circuit control. The TRIAC is located on
the evaporator header inside the control
panel.
Note: The temperature must be within the
range listed to check the thermostat. Refer
to the troubleshooting section in this manual
for additional information on thermostat
testing.
TEST
Remove the wires from the thermostat. Turn
the thermostat to its coldest position. Check to
see if there is continuity between the two
terminals. Turn the thermostat to its warmest
position. Check continuity to see if the
thermostat contacts open.