Certikin COH110, Инструкция по эксплуатации, установке и обслуживанию

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10: FAULT FINDING
10:1 GENERAL
If the Heater fails to start, make the following checks.
1. Is there sufficient fuel in the storage tank?
2. Are all fuel supply valves open (turned fully
anti-clockwise) and ball valves open?
3. Is the mains electricity supply switched On?
4. Is there a Demand for Pool or Space Heating?
5. For Space Heating is the Heater Thermostat
set to the desired temperature?
6. Check the fuses which should have been fitted
to the mains electricity supply to the Timeswitch/
Heater. If the fuse has blown.
Replace it. If it blows again, call a Service
Engineer.
7. Is the Filter LED lit? If it is, check Pool Pump
is running and the Filter is not blocked.
8. Is the Lockout LED lit? If it is, press the Reset
Button on Burner.
9. Is the Overheat LED lit? If it is press the Reset
on the Control Panel.
If the fault is not permanently corrected by one of these
actions it is likely that a component is faulty and will
need replacing. This should only be carried out by
someone competent to do so.
IMPORTANT - Electrical Safety
IT IS ESSENTIAL THAT BEFORE ANY PANELS
OR COMPONENTS ARE REMOVED FROM THE
HEATER, THAT THE MAINS ISOLATOR IS
SWITCHED OFF.
10:2 CONTROL FAULT DIAGNOSIS
Before commencing a diagnosis it is recommended
that you familiarise yourself with the functions of the
Controls. These are detailed in the
Users Instruc-
tions Section 1:6
and in
Heater Control, Section
4:2
The Control will diagnose and display most of
its own faults.
Self Check
The Control does a full self check during power up.
It also briefly lights all the LEDs and the Tempera-
ture Display so they can be checked for operation.
Demand Inputs
The front panel LEDs for Pool Demand and Heating
Demand are triggered from the Mains Inputs and
the chosen Priority. If they are not lit check the
supplied voltage, connections and Priority setting.
Relay Outputs
LEDs on the Control Board, beside the relays, are
directly connected to the relay outputs and show if
there is an output voltage to the Burner, Internal
Pump or Pool Pump. If they are not lit check the
output voltages, if correct replace the board. If lit,
check voltage at the component, replace if correct.
Displayed Faults
The Control board detects and displays certain
fault conditions. The display alternates between
two codes.
Logs
The Control keeps a log of the number of times the
Pressure Switch, the Burner Lockout and the
Overheat Switch operate. These can be examined
and reset to zero in Setup Mode. The Temperature
Display units and Priority can also be checked and
altered in this mode.
Setup Mode
To enter Setup Mode turn both temperature
control knobs to OFF.
To enter Setup Mode turn both Temperature
Control Knobs to OFF.
The following must be carried out within 5 sec-
onds.
1. Turn on the Mains supply to the Heater.
2. Turn the Pool Temperature Control Knob ON.
3. Turn the Heating Temperature Control Knob ON.
4. Turn the Pool Temperature Control Knob OFF.
5. Turn The Heating Temperature Control Knob
OFF.
The Control is now in ‘Setup Mode’ and displaying
the Heater temperature. The Display can now
show additional data as the Pool Temperature
Knob is rotated.
See Fig 10:2a & Table 10:2.1.
Settings that can be altered can be changed by
turning the Heating Temperature Control Knob On
10-03-03
44
Display Reason Action
Err / No
Control board fault. Power Off then On
again. If not corrected
replace board.
b / oc
Boiler sensor Check connections,
Open Circuit. if correct, replace
sensor.
P / oc
Pool sensor
Check connections,
Open Circuit. if correct, replace
sensor.
b / cc
Boiler sensor Check connections,
Short Circuit. if correct, replace
sensor.
P / cc
Pool sensor
Check connections,
Short Circuit. if correct, replace
sensor.