Lochinvar CHA 100 G CE Installation, Commissioning, User & Maintenance Instructions page 57

Feature Cause
Green LED ON There are three possible causes for this error. In order to determine the cause, you must
cause the error to appear again:
and
Red LED ON
1. Reset the appliance by pressing the reset button 1x
2. If nothing happens, then the reset button has been pressed too often (maximum 5 times
in a single heating cycle). Disconnect the appliance from the mains and then restart it.
SeeIsolating the appliance from the mains
heater.
3. Decide which type of cause (a) or (b) describes the situation.
(a)
three unsuccessful
start attempts in a row
(b)
The safety thermostat
has cut out
Measure
and steps 3 through 5 of
1. No gas:
- Check that the gas valve is open
- Check whether the gas control is opening (clicking of the
gas control)
- Check the leads of the gas control
2. No ignition:
- Check whether the hot surface igniter lights up
- Check the electrical supply to the hot surface igniter.
- Check the leads of the glow igniter
3. No flame detection:
- Check that the Phase (L) and Neutral (N) are correctly
connected (from the mains) to the appliance
- Check whether the flame probe is defective
- Check that the flame probe leads are properly connected
1. The safety thermostat has cut out correctly:
- Reset the appliance
- Check whether the high-limit thermostat is working
- Check that the circulation pump (if present) is working
2. The safety thermostat has cut out without apparent reason:
- Check whether the thermostat is defective
- Check whether the sensor of the thermostat is defective
Comment
If the error cannot be resolved or is persistent, contact your
installation engineer
Starting the water