DORCHESTER DR-FC 120, Installation, Comissioning And Maintenance Instructions

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Instruction manual DR-FC 71
Water leakage Leakage from a water
connection (threaded)
Tighten the threaded connection If the leak persists, consult your installation engineer
Condensate leakage Check that the condensation water discharge is working properly.
Rectify if necessary
Leakage from another
nearby water water
heater or pipe segment
Trace the leak
Leakage from the water
heater tank
Consult the supplier and/or manufacturer
Explosive ignition Incorrect supply
pressure and/or CO
2
Set (3.11 "Checking supply pressure, CO
2
value and switching
pressure") the correct supply pressure and/or CO
2
.
If ignition is not improved, consult your installation engineer.
Contaminated burner Clean the burner (15.4.2 "Clean burner")
Insufficient or no hot
water
The water heater is off Start the water heater (9 "Starting the water heater")
No supply voltage
present
1. Check whether the isolator is ON.
2. Check that there is power to the isolator.
3. Check whether the ON/OFF switch of the controller is ON
(position I).
4. Check whether there is power to the electrical connector block.
5. The measured voltage must be 230 V
AC
(-15%, +10%)
See the electrical diagram (17 "Appendices") .
If the error persists, consult your installation engineer.
Hot water supply is
used up
Reduce hot water consumption and give the water heater time to
heat up.
If there continues to be insufficient or no hot water, consult your
installation engineer.
The controller is in the
OFF position.
Switch the controller to the ON position (11.3 "Switching to "ON
mode"") .
Temperature (T
set
) is
set too low.
Set temperature (T
set
) to a higher setting (11.4 "Setting the water
temperature") .
Indication Cause Measure Remark