Controls Configuration & Adjustments...

Level-2 Microprocessor Programming... continued:

7.Pool Dead Band Differential... continued:

C.Once the desired dead band value has been selected, not pressing any buttons for

15-seconds will allow the controller to save the selection and return to the normal operating mode. Pressing the {POOL/SPA] key will also save the selection and step to the next menu parameter: [LOC] (LOCK CODE).

8.Changing the Service Lock Code and “Back Door” Entry:

A.Changing the Code…

The factory default Service Lock Code is “50”. Service personnel are strongly advised to retain the factory default setting. However, should unauthorized access to Level-2 (Service) menu be suspected, it may be necessary to select a code other than “50”. To change the Service Lock Code:

1)Follow the steps 1 A through 1 D to enter the service menu. Once [dEL] is displayed, press the [POOL/SPA] key until the display shows [LOC] (LOCK CODE).

2)Press the [UP] arrow key to display the current service lock code value. With the current value displayed the [UP] arrow key will increase the value while the [DOWN] arrow key will decrease the value. When the desired value is displayed not pressing depressing any buttons for 15 seconds will allow the controller to save the selection and return to the normal operating mode. Pressing the {POOL/SPA] key will also save the selection and step to the next menu parameter. It is recommended, however, unless attempting to prevent tampering, that the factory setting of: “50” remain in use.

B.Back-door Access (For use when correct Service Lock Code is unknown):

1)Simultaneously press and hold the [POOL/SPA] and [UP ARROW] keys until the display shows “888”. This operation will reset the controller to the factory default settings.

2)The factory reset will change the service lock code back to the factory setting “50”. In addition, all other settings (including external controller configuration) are returned to the factory defaults. See section in this manual entitled: “Factory Default Settings” for a complete list of factory default parameters.

(End... Level-2 Microprocessor Programming)

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Aquacal 155, 120 owner manual Pool Dead Band Differential, Changing the Service Lock Code and Back Door Entry
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120, 155 specifications

Aquacal 155,120 is a highly regarded pool heater known for its efficiency, reliability, and advanced technology. This product stands out in the competitive market of swimming pool heating solutions, making it a popular choice among pool owners and professionals alike.

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In summary, the Aquacal 155,120 is an outstanding choice for pool owners looking for an efficient, reliable, and technologically advanced heating solution. With its titanium heat exchanger, inverter technology, user-friendly control panel, energy efficiency, and excellent insulation, this pool heater stands out as a top contender for modern pool heating needs. Whether for leisure activities or extended swimming seasons, the Aquacal 155,120 ensures a comfortable and enjoyable swimming experience.
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