ENCON 3661, Installation, Operation And Maintenance Manual, Page: 5 / 11

Doc. No: 01999901
Revision: A 4 of 10
Issue Date: 08/15/21
TROUBLESHOOTING
SYMPTOM PROBLEM SOLUTION
Heater and Pump not working
1)
No power to the unit.
2)
Float 1-FS not working.
3)
Float switch device stuck in
down position.
4)
Float switch is defective.
5)
Foam float is in the wrong
orientation.
1)
Check the following:
a) Main power source and correct voltage is
applied.
b) Disconnect switch is in the “ON” position
and fuses are not blown.
c) Inspect terminals TB1 and TB2. Electrical
termination should be tight, free of oxide
build-up, and wiring is per wiring diagram.
d) Relay 1-CR using a voltmeter at Terminal 5
to TB2. Replace relay, if not energized.
2)
Check water level in tank.
3)
Clean float switch device. See Operation &
Maintenance section for instructions.
4)
Check by moving float full stroke to see if
power is restored to components. Remove and
replace float switch, if defective.
5)
Turn foam float around; must be orientated
downward.
NOTE: Long term cleaning and main-tenance
schedules must be performed. See Operation
& Maintenance section.
Pump working; Heater not working
1)
Thermostat assembly (1-
TAS or 2-TAS) is defective.
2)
Heater contactor 1-CON is
defective.
3)
Heater coil 1-HTR is
defective.
1)
Check water temperature is below 70
°
F. 1-
TAS shuts off heater when water temperature
is over 85
°
F. Remove and replace defective
thermostat.
2)
1-CON must be energized. Check using
voltmeter at Terminals 3 & 5. Replace
contactor, if not energized.
3)
Check heater terminals. Electrical terminals
should be tight, free of oxide build-up. 1-HTR
must be energized. Check using voltmeter at
TB5 to 2W3. Replace heater, if all terminals
are confirmed and not energized.
Pump not working; Heater working
1)
Pump is defective.
2)
Pump impeller is jammed.
3)
Pump is damaged.
1)
1-MTR must be energized. Check using
voltmeter at TB6 to 2W5. Replace pump, if not
energized.
2)
Clean pump. See Operation & Maintenance
section for instructions.
3)
Remove and replace pump.
NOTE: Long term cleaning and maintenance
schedules must be performed. See Operation
& Maintenance section.
Pump volume low Pump impeller is dirty. Clean pump. See Operation & Maintenance
section for instructions.
NOTE: Long term cleaning and maintenance
schedules must be performed. See Operation &
Maintenance section.
Tank Dirty Proper maintenance schedule
not performed. Drain and clean tank. See Operation &
Maintenance section for instructions.
NOTE : Recommended cleaning and main-
tenance schedule of tank is every 60 days
minimum and not to exceed 180 days. More
often if conditions warrants.
Contactor chatter
Relay chatter Defective contactor or relay. Replace contactor or relay.