WarmFlow WS18, Руководство пользователя

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17
The “OK” status beside the time display on information screen 1 can change (see Figure 13).
Further explanation of what can be displayed in this area on information screen 1 is provided in
Table 5.
Status Description
OK The appliance can operate as normal providing there are no active alarms.
PF
Power Failure Recovery - There has been an electrical power failure (power cut) and power has
now been restored. Power Failure Recovery is a feature of the appliance that allows it to recover
quickly to the operating mode it was in prior to the power failure.
NOTE – Turning the isolator switch on the front of the appliance OFF and ON will trigger Power
Failure Recovery unless the appliance is in Standby mode.
FR
Freeze Risk Mode – The water temperature in the return pipe connected to the bottom of the heat
exchanger ( Return Temp. on information screen 1 ) has dropped below 3
⁰
C. There is now a risk of
damaging the appliance if the water temperature drops any further and begins to freeze. Freeze
Risk Mode is enabled and the appliance will start automatically, even if the time clock or
thermostat controlling the central heating system is not calling for heat i.e. there is no heat
demand. Freeze Risk Mode will be disabled and the appliance will shut down when a Return
Temp. of 30
⁰ C is achieved.
Freeze Risk Mode is an integral part of the control system in the appliance and cannot be
bypassed. Be aware it is only included to protect the appliance from freeze risk damage, not the
central heating system to which it is connected, including the central heating pipework at the point
of connection at the appliance. The anti-condensation valve of the appliance will remain 100%
closed when Freeze Risk Mode is enabled meaning all heat generated in the heat exchanger of
the appliance will remain in the appliance and will not be distributed through the pipework of the
central heating system.
It is strongly recommended the fuel hopper of the appliance is kept topped up during cold weather
to ensure the appliance can start should Freeze Risk Mode be enabled. The circulating pump will
still operate when Freeze Risk Mode is enabled, even if the fuel hopper is empty and the
appliance is unable to fire, providing some level of freeze risk protection.
It is strongly recommended the central heating system to which the appliance is connected is set
to operate for an appropriate period during cold weather, particularly at night, in order to protect
the whole central heating system from freeze risk.
LF
Limit Flue – The flue gas temperature is approaching a high limit programmed into the control
system of the appliance. The control system will stop the appliance operating in the higher
powerbands in order to reduce the flue gas temperature to an acceptable level.
LS
Low Suction – The actual draught (See Table 4 - Draught Act) achieved through the appliance by
the exhaust fan is approaching a low limit programmed into the control system of the appliance.
The control system will stop the appliance operating in the higher powerbands in order to increase
the actual draught to an acceptable level.
Table 5: Appliance Status.