State Water Heaters SCE 65-400, Installation, User And Service Manual

Page: 58 / 72

is
Release R.1.0 Uk 58
Warning
Maintenance may only by carried out by a service and maintenance engineer.
8.3 Fault table 'no hot water'
If the appliance is not supplying any hot water, this can have a variety of causes.
Then consult the table
’Table 8.2 No hot water’ .
Table 8.2 No hot water
Page 1 of 2
Characteristic Cause Measure Observation
Green LED OFF
and
Red LED OFF
No supply voltage 1. Check whether the main switch is ON.
2. Check the voltage across the main switch.
3. Check the voltage across the electrical connecting block.
4. Check voltage across the burner controller.
5. Check fuse in the burner controller.
The measured voltage must be 230V AC +15% -10%. See appendix ’A.2 Electrical diagram SCE’ . If the fault cannot be
resolved, then contact your installer.
Green LED ON
and
Red LED OFF.
Blockage in the flue
gas outlet (the flue gas
cut-out has switched) 1. Detect blockage.
2. Remove blockage.
3. Reset flue gas cut-out. See paragraph
’5.8 Flue gas outlet cut-
out reset button’ .
When there is a heat demand, the appliance comes into operation.