Hafele HC-M773A, Installation Operating & Maintenance Manual

as such. In case the cooking zone is at stage “hot“ the [ H] symbol 

alternates with the error code (0.5 sec Symbol 0.5 sec “H“).

Water sprinkled on the glass surface does not always lead to 

a key actuation and cannot be surely detected. ( After wiping 

the glass covering the keys, all keys are ready for operation in 

no time).

If no cooking  zone is activated within  20 sec after  pressing 

POWER ON,  the  control unit  is  reset  to  Off-mode (black 

displays).

Key Lock (Optional)

The actuation of the key lock key “4” in the wait or active mode

locks the keyboard and the assigned key-lock LED “7” is

statically illuminated. Here, the actuation times of the key-lock

key have to be taken into account. The control continues to work

in the set mode, but may no longer be operated with any key,

except the key-lock key itself or the on/off key “1”. 

The switching OFF with the on/off key “1” is also possible in the

locked condition. The assigned key-lock LED “7” fades when

switching off the control The key-lock function included LED is

active again when switching on (in wait mode 10 s) until this is

deactivated by a repeated actuation of the key-lock key. The

activation/deactivation of the key-lock function in the off mode is

not possible. 

When programmed timers expire the respective timer alarms

may be confirmed by actuating any key without needing to

unlock the control.

The repeated actuation of the key-lock key in the wait or active

mode unlocks the keyboard and the assigned key-lock LED

fades. All sensor keys may be operated as usual again.

Control of multiple circuits

When a dual / triple cooking zone is activated, the 3 circuits

are switched on at the same time. The activation / deactivation

of each circuit is done with button 3 and it is indicated with an 

illuminated segment (11).

Acoustic Feedback (Buzzer)

The following activities occurring  during operation of the TC unit 

are fed back audibly via a buzzer:

-Short single tone for regular actuation of a key

-Longer,  intermittent  tone for permanent use of keys  over a 

longer period of time (

≥

 10 sec )

-Expiry of the timer

Timer-function (optional)

The timer function is available in t wo types:

-Stand-alone-timer 1..99 min:  Audible signal with  timing.  This 

function can only be activated as long as no cooking  zone is 

in operation (all stages = 0). Is any cooking zone started  with 

operation  (level  >0) than the  stand  alone  timer  keeps  in 

operation. If the timer shall be used to cut off a cooking zone (see 

cooking zone timer) then the control must first be s witched off 

(power sensor) and switched on again.

-Cooking  zone  timer  1..99 min:  This  function  can  only  be 

activated as long as a cooking is active (stage > 0; display dot). 

Audible signal with timing, four cooking zones to be cut off are 

freely programmable.

Setting a timer value:

By adjustment with the slider area.

Primarily  the  adjustment  of  the  first  digit  takes  place  and 

thereafter the adjustment of the second digit.

In case of an active timer display the timer value may be set to

[0] directly by pressing [0] on the slider area (left side)

Switching off an active timer:

A timer can be switched of by setting its value to “ 0”.

A stand alone timer can be switched of by a double actuation of 

the power key “1”.

Timer Stand-Alone:

If the control unit is switched on (all cooking zone displays show

“0”),  the stand-alone timer may be activated by pressing  the 

timer select key. The timer display show “00. The timer is cut 

off after 10 sec (black display) if no further settings are made. 

In case of a timer value is set with no activation of a cooking 

zone within

10sec, the cooking  zone displays are cut off (interposing relays 

are also cut off ). Possible optic warnings for hot cooking zones 

[H] are displayed permanently

The setting range is 0 -99 minutes in single steps; by Slider area. 

Directly after the timer value is set countdown starts  with the 

last set value. Aft er expiring of the set time an acoustic signal is 

given and the timer display flashes “00“.

The acoustic signal is terminated

-after 2 min and/or

-by actuating any key.

Thereafter timer display stops blinking and extinguishes. 

Possible optic    warnings   for   hot cooking  zones “H” are 

displayed permanently

By  pressing  the  ON/OFF key  “1”, the control unit  may be 

switched from “purely timer operation“ to cooking zone at

any time -with  or without an activated Stand-Alone timer -.

Cooking zone specific timer programming

By actuating a cooking zone (cooking zone stage > 0) followed by

selecting the timer display (within 10 sec) a timer value may be 

assigned  to the cooking  zone as a cut-off function. The LED 

around the timer “9” indicates which cooking zone the timer had 

been activated for.

As soon as the timer is selected the according LED is blinking. 

In case of a cooking   zone is selected thereafter,  the dot 

extinguishes and the LED stops blinking.

When s witching  from one cooking  zone to another, the timer 

display indicates the current timer value of the respective 

cooking zone. Timer settings of other cooking zones stay active.

Further setting is like with the stand-alone timer

In case of more than one active timer the display indicates the 

lowest timer value (after 10s deselection time).

After expiring of the set time an acoustic signal is given and the

timer  display  flashes  “ 00“. The related timer  LED is blinking 

synchronously. The programmed cooking zone is cut-off, a 

permanent “0” is.  After 10 sec (deselection time) a permanent 

“H“ is displayed on a “hot“ cooking zone. Otherwise, the symbol 

“0“ is indicated.

The acoustic signal and the blinking of the cooking zone timer 

Led is terminated

- after 2 min and/or

- by actuating any key.

Thereafter timer display stops extinguishes and the cooking zone 

stays unselected.

Behaviour of the cooking  zone specific timer is similar to the 

stand alone timer.

In case of a timer is programmed  for a cooking  zone the

operating time limitation is dependent of the timer value and not 

of the standard table value.