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47
TROUBLESHOOTING
CER-TEMP 80 RECOVERY SYSTEM CHECKOUT PROCEDURE
Use this checkout for Cer-Temp 80 Recovery Systems. (For hot water supply application only)
Checkout Sequence
System Operation
Cause Remedy
Contact Incorrect
Set tank temperature
control (thermostat) 20°F
(10°C) below tank water
temperature.
Circulating pump and
burner shut off.
With thermal balancer,
pump off delay of
approximately 2 minutes.
Pump and burner remain
on.
Tank temperature control
(thermostat) defective.
Replace.
System wiring is
incorrect.
Correct wiring.
Circulating pump on.
Pump wired for
continuous operation.
Correct wiring.
Burner on.
Gas valve stuck or
defective.
Correct or replace
valve.
System wiring is
incorrect.
Correct wiring.
Set tank temperature
control (thermostat) 20°F
(10°C) above tank water
temperature.
Circulating pump and
burner on.
Circulating pump on.
High limit control set too
low.
Replace. (If problem
proven to be at this
control by applying
jumper to terminals.)
High limit control
differential too wide.
System wiring is
incorrect.
Correct wiring.
Coil protector switch has
activated.
Remove control cover,
depress reset button.
Gas valve or wiring
defective.
Check wiring. Repair or
replace valve.
Circulating pump and
burner off.
Power off or system
wiring is incorrect.
Check power supply
and wiring.
Tank temperature control
(thermostat) defective.
Replace.
Burner on.
System wiring is
incorrect.
Correct wiring.
Boiler outlet temperature
exceeds 210°F (100°C).
Circulating pump on.
Circulating pump and
burner on.
High limit control
defective, or set too high
(max. should be set at
200°F).
Replace.
Set tank temperature
control (thermostat)
for desired water
temperature.
System maintains desired
water temperature.