HARDY MANUFACTURING CO., INC (MODEL LC300, LC500 & LC2500)
PAGE 38
Corrective Action
Possible Cause
Complaint
Area of Trouble
Pump does run
1. Defective 24 volt
transformer
2. Defective wall
thermostat
(heater)
3. Defective low
temperature
sensor
4. Defective pump
relay
1. Located at existing
central unit. If 120/230
volts is being supplied
to primary side check
for 24 volts on
secondary. If 24 volts
not present, replace
transformer.
2. Located inside
building. Remove
cover. Check for 24
volts. Level the
mounting base. Blow
dust from sensing
bimetal. Adjust heat
anticipator. See
owners manual
connection
instructions.
3. If heater is up to
temperature (over 140°
f.), remove wires on
sensor and connect to
each other to bypass.
If pump runs replace
low temperature
sensor.
4. Check relay terminals
#7 & #8 for 24 volts. If
24 volts is present, use
ohm meter to check
contacts. Connect ohm
meter to terminals #4
& #6. If no reading
replace relay.
No Heat
Main power
supply and
ground fault
interrupter
receptacle
“OK”
Water
temperature
is “HOT”
Pump Performance
Unplug pump and bypass relay by tying relay
wires #4 and #6 together. Plug pump back in.
8-1
GENERAL TROUBLE SHOOTING GUIDE (continued)
Содержание LC300
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