Section 16: Diagnostics And Troubleshooting; General Diagnostics; Restoring Factory Default Programming; Hardware Reset - DSC MAXSYS PC4020 Installation Manual

Section 16: Diagnostics and Troubleshooting

16.1 General Diagnostics

Ref #: [04]
The diagnostics function is designed to help you track
down any problems with the installed modules.
If there is no problem the keypad will display "PC40X0
System No Faults Found."
If there is a problem, the keypad will display "Error...
Module." This message will be accompanied by either
"E" "T" or "LV" followed by a number. The number rep-
resents the module (see list below). The letters represent
the following:
• E = communications error. The main panel has lost
communications with the module.
• T = tamper. The tamper zone on the module has been
activated.
• LV = low voltage. The module is not receiving enough
voltage from the Combus.
Below is a list of the indicated numbers and which mod-
ules they represent.
Indicated #
1-8
9-24
25
26-41
42-50
51-66
67
68
69-84
85
86-89

16.2 Restoring Factory Default Programming

These options are only available during the first minute
after power up. To access these sections, disconnect then
reconnect the AC and battery power. Then, enter [*] [8]
[Installer's Code], followed by reference number [0402]
to default the main panel, or [0403] to default the
ESCORT4580 (if installed).
Factory Default (Software)
Ref #: [0402]
Once this selection has been made, the keypad will read
"Confirm Default Press *." Press the [*] key to confirm
the operation. To cancel the default, press the [#] key.
Once the [*] key is pressed, the programming keypad
will display the message "Power System Down and
Restart." Remove the battery and AC connections to the
control panel. This will erase all programming and reset
the system to its factory default settings. All modules
will have to be re-enrolled.
When using AML devices, the panel key will return to
[00] upon resetting the panel's software.
40
Module #
For Future Use
LCD45XX - #1-16
PC4400
PC41XX - #1-16
PC4216 - #1-9
PC4204 - #1-16
Not used
ESCORT4580
PC4820 - #1-16
PC4701
PC4702 #1-4
Default ESCORT4580 (if installed)
Ref #: [0403]
Once this selection has been made, the keypad will read
"Confirm Default Press *." Press the [*] key to confirm
the operation. To cancel the default, press the [#] key.
Once the [*] key is pressed, the programming keypad
will display the message "Resetting 4580 Module." Once
the default is complete, the keypad will display "4580
Default is Complete." The ESCORT4580 module will be
reset to its factory default settings.

16.3 Hardware Reset

If the installer's code is lost inadvertently, the only way
to reprogram the system is to perform a hardware reset.
NOTE: If the Installer's Lockout feature is enabled,
there is no way to reprogram the system without
entering the correct installer's code. Panels returned
to the manufacturer with this feature enabled and
exhibit no other problems will be subject to an addi-
tional service charge.
NOTE: Delete any enrolled AML zones from the
system before performing a Hardware Reset.
To reset the panel to its factory default settings, perform
the following:
1. Power the system down by removing both the AC
connections and the battery power to the control
panel.
2. Short the Z1 and PGM1 terminals on the control
panel (PGM1 on PC4020). Nothing else should be
connected to Z1 or to the PGM terminals.
3. Restore power to the control panel. Wait for 20 sec-
onds.
4. Power down the panel by removing both the AC and
battery connections.
5. Remove the short between the Z1 and PGM1 termi-
nals. The system will have reloaded the memory all
factory default settings. All modules will have to be
enrolled again. The event buffer is the only part of the
system's memory that will not be restored.
6. Power up the panel. Connect the battery first, then
the AC.

16.4 Viewing Trouble Conditions

The alarm control panel continuously monitors a num-
ber of possible trouble conditions. If one of these condi-
tions occurs, the keypad Trouble light will turn on and a
beeping sound will be heard every 10 seconds. Press the
[#] key to silence the keypad. The Trouble light will stay
on until the trouble is cleared.
If the Audible AC Tbl option is turned on (ref #
[000200]), keypads will sound trouble beeps at the end of
the AC Fail Delay (see section 10.9 "Transmission
Delay") when the panel loses AC power. If the option is
turned off, keypads will not sound trouble beeps when
the panel loses AC power. The option is off by default.
If the Latch Troubles option is turned on (ref # [000200]),
whenever any PC4020, PC4204, PC4820 or PC4702 AC or