63
STRATA1
3 8 & 3 8 / 4 6 C O M B I
21.2 maintenance (contd)
at m) check and top up as necessary water treatment to required %.
Important Note
IF ANY WATER CARRYING JOINT WITHIN THE BOILER IS DISASSEMBLED THEN THE “O” RING
SEAL MUST ALWAYS BE REPLACED, LIKEWISE IF ANY OTHER SEAL IS NOTED TO BE DEFORMED
THEN THEY SHOULD ALSO BE REPLACED. WATER SEALING “O” RINGS ARE A ONE TIME USE
ONLY AND SHOULD NOT BE RE-USED.
cancelling the “service” message
Following the maintenance operations, the service message (when displayed) must be cancelled
See 19.6).
22.0 screen display/
diagnosis of faults
The control panel of the Strata 1 boiler has an LCD screen, displaying two lines of data. This screen
provides information about the operation of the appliance; it shows operation messages (non flashing) and
fault messages (flashing display). The first line contains text information about the status of the unit.
It shows:
status messages (non flashing)
for normal operation
No Demand
No heat demand (boiler not required to be on).
Pre-purge
Combustion chamber is being pre-ventilated with air from the burner fan.
Ignition
The ignition sequence of the burner is initiated.
CH Demand
The boiler is operating in central heating mode.
HW Demand
The boiler is operating to produce domestic hot water.
Chimney
The boiler is operating in test mode at mid output to enable flue gas emissions to be
checked (auto expires after 10 min).
10 min Test
The boiler is operating in engineers test mode for adjustment purposes (auto expires
after 10 min).
Post-Purge
Combustion chamber is being post-ventilated with air following boiler operation.
Limit F/R
The flow and/or return temperature is too high (currently).
Fan High
The burner fan is running too fast (currently).
Fan Low
The burner fan is running too slow (currently)
Fault R/U
There is a fault with the modulating unit (RE2132) or kascade manager (KKM2) or a
fault in the wiring to these controls (in the case of the RE2132 the boiler runs
continuously in heating mode to protect the building).
OTS Fault
There is a fault in the outside air sensor or in the wiring to the sensor or the function
Nr is incorrectly set to ask the boiler to look for an outside sensor when there is none
installed.
Service
The service interval time has expired and the boiler should now be maintained.
Deaeration
The in built pumps are operating to remove any possible collection of air from the heat
exchanger. (Occurs when power turned off/on and after reset of fault).