LAARS HP-M2 Series - Installation, Operation and Maintenance Instructions - Manual (Page 35)

H Series Page 35
WITH A CALL FOR HEAT RESET
BOILER CONTROL BY SWITCHING
OFF BOILER SWITCH FOR 15 SECS.
AND THEN ON AGAIN.
AFTER TWO SECONDS DOES
GREEN POWER LIGHT COME ON?
REFER TO GENERAL TROUBLE
SHOOTING SECTION FIGURE 24 PUMP OPERATES?
YES
YES NO
NO
AFTER FIVE MINUTES ARE
ANY RED LIGHTS FLASHING? 120 VOLTS AT PUMP PLUG?
YES NO
LIMIT CIRCUIT OPEN
- SEE FIGURE 25 PURGE - SEE FIGURE 26
VALVE - SEE FIGURE 29
24 VOLTS AT CONTROL
(CN6) PLUG PIN #7
NO YES
REPLACE
2400-224
YES
120 VOLTS AT
PUMP MOTOR
REPLACE
PUMP
CARTRIDGE
YES NO
CHECK
WIRES TO
PUMP
Р
Р Р
Р Р
Р
NO
Р
Р Р
Р Р
Р Р
NO CALL
FOR HEAT
Figure 30. Checking Internal Pump.
OUT OF
PRODUCTION