INSTALLATION AND OPERATION INSTRUCTIONS
16
BT INDIRECT SERIES – WATER HEATERS
TROUBLESHOOTING
SYMPTOM DIAGNOSIS REMEDY
WATER AT
FAUCETS TOO
HOT
DHW temperature
setting too high
• Reduce the DHW Tank Set Point temperature
DHW temperature
sensor giving false
reading
• Sensor is not fully inserted into the well
• Sensor giving incorrect resistance reading
• Sensor connected to IBC Therm terminals instead of DHW
Sensor terminals
• Improper 3rd party sensor installed in well
WATER AT
FAUCETS TOO
COOL
DHW temperature
setting too low
• Increase the DHW Tank Set Point temperature
Boiler Maximum
Supply Temp. setting
too low
• Make sure the Maximum Supply Temp. setting is at least
10°F higher than the DHW Supply Setpoint PLUS 1/2 of the
Supply Diff’l Temp setting.
NO HOT WATER
AT FAUCETS
Boiler does not
operate
• Ensure boiler power is on
• Ensure the boiler is programed for DHW and the water
temperatures are set properly
• Check the tank temperature on the IBC screen, Open or
Short + sensor or wiring issue
Water Heater
Circulator does not
operate
• Follow steps for Boiler does not operate
• Ensure the pump relay is closed and suppling power to the
pump
• Ensure the zone valve is open and the end switch is closed
calling for heat
• Check wiring connections at the circulator
• Measure voltage at the circulator during a call for heat,
should see 120VAC +/- 12VAC
• If power is at the circulator and connections are correct,
replace circulator
Water heater zone
valve does not open
• Follow steps for Boiler does not operate
• Check for 24VAC at the zone valve while there is a call for
heat, if correct voltage is available and connections are
good, replace the zone valve.
Tank sensor open,
short, or mis-wired
• Ensure the tank sensor is connected to the correct terminals
and the wires are properly attached to the terminal strip and
the sensor is properly attached to the wiring at the tank
• Disconnect the sensor wires from the terminal strip and
measure the resistance in Ohms across the 2 sensor
wires. Compare this value to the chart and the actual
tank temperature. Repeat this test for the sensor only and
compare the results. Check/replace the wire from the boiler
to the sensor or replace the sensor
7.0
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