Figure 4. Master And Relay Circuit Board - Cornelius R-404A REFRIGERANT Service Manual

DIP SWITCH
ASS'Y
Note: Switch No. 3 must be in "OFF" position for standard Units with pulse expan-
sion valves. Switch No. 3 must be in "ON" position for Units with mechanical
expansion valves.
MOTOR CURRENT
ADJUSTMENT
RELAY CIRCUIT
BOARD NO. 2
RELAY CIRCUIT
BOARD NO. 1

FIGURE 4. MASTER AND RELAY CIRCUIT BOARD

SERVICE USE ONLY
10
APPLICABLE ELECTRIC OR GAS DEFROST (See Table 5)
9
8
NOT USED
7
6
MOTOR CURRENT SELF-CALIBRATION (See Table 5)
5
BEATER MOTORS CURRENT READOUT (See Table 5)
4
3
2
POINT OF SALE MESSAGE DISPLAY SELECT
1
(See Table 7)
MASTER CIRCUIT
NO. 1 AND NO. 2 EVAPORATOR COILS
REFRIGERATION COMMON OUTLET TEMPERATURES
21
BOARD
NO. 2 EVAPORATOR REFRIGERATION
COIL INLET TEMPERATURE
NO. 1 EVAPORATOR REFRIGERATION
COIL INLET TEMPERATURE
312028000