Daikin FWEC2 - Read;Write Registers; Self-Diagnosis Procedure

Installation and operation manual
10
FWEC2
Advanced electronic controller
FC66002764
■ Push the keys at the same time
■ Use the keys to change the value on the display
until arriving at the password for self-diagnosis (030) and
press .
The following screen will be displayed:
■ Press the
button to switch on the various thermostat
outputs in sequence.
Symbol Actuation Terminals
Extra low speed N-V0
Min. speed N-V1
Med. speed N-V2
Max. speed N-V3
Valve N-Vc
Electrical heater
Second valve
N-Vh
no symbol no active outlet
The electronic controller outputs can be checked one by
one either by observing the respective component (valve,
fan..) or verifying whether a voltage of 230 V is present at the
corresponding terminals.
■ To exit the self-diagnosis procedure press
(after a
few minutes the thermostat will automatically exit in any
case).
DESCRIPTION OF READ/WRITE REGISTERS [R/W]
■ “Digital 1” REGISTER:
H
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8
En.Vel
En.Min/
Max
En.Set En.MinT En.ECO En.RE En.S/W
En.On/
Off
L
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
- - Lock MinT Eco RE S/W On/Off
- On/Off: On/Off via supervision system
- S/W: Mode set via supervision system (0: Cooling, 1:
Heating)
- RE: selection of electrical heater via supervision system
- Eco: Economy mode ON via supervision system
- MinT.: Minimum Temperature control ON via supervision
system
- Lock: keypad lock (0: unlocked, 1: locked)
- En.On/Off :enabling of On/Off control via supervision
system
- En.S/W: enabling of mode control via supervision system
- En.RE: enabling of selection of electrical heater function
via supervision system
- En.ECO: enabling of economy mode activation via supervi-
sion system
- En.MinT: enabling of selection of Minimum Temperature
logic via supervision system
- En.Set: enabling of forced override of setpoint via supervi-
sion system
- En.Min/Max: enabling of setpoint thresholds via supervi-
sion system
- En.Vel: enabling of selection of fan speed via supervision
system
■ “SETPOINT - COOLING” Register: setpoint imposed by
supervision system for the Cooling mode
■ “SETPOINT - HEATING” Register: setpoint imposed by
supervision system for the Heating mode
■ “MINIMUM SETPOINT - COOL.” Register : lower limit
for setpoint in cooling mode
■ “MAXIMUM SETPOINT - COOL.” Register “: upper limit
for setpoint in cooling mode
■ “MINIMUM SETPOINT - HEAT.” Register “: lower limit
for setpoint in heating mode
■ “MAXIMUM SETPOINT - HEAT.” Register “: upper limit
for setpoint in heating mode
■ “SPEED” Register: selection of fan speed via supervision
system
■ “ECONOMY CORRECTION” Register: correction of set-
point in the case of economy mode imposed by supervisor
(this correction is an amount subtracted from or added to
the setpoint, based on the operating mode)
SELF-DIAGNOSIS PROCEDURE
This procedure allows you to check whether the individual
outputs of the controller function correctly.
To run the procedure, follow the directions below:
■ Switch the thermostat off
001 level:
password entry