PRESSURE READINGS FOR THE HGMSZ
Codes 800, 1000 and 1800
FIRST DIAGNOSTIC SCREEN
Zone Pressure (0.06 psi below ambient) Maximum
2.7 PSIA
4.26500V <0000>
24.5Cd
14.00psi
Press left arrow key
Revised 6/5/08
P. M. Pape
Purge Pressure (0.03 psi below ambient) Maximum
2.7 PSIA
4.26500v <0000>
24.5cD *
14.3psi
Look for asterisk
Press left arrow key until asterisk clears. Then press bottom arrow key. This will stop the pump.
Take the pressure reading with the pump off then press the bottom arrow key to restart the pump.
DO NOT LEAVE THE PUMP OFF FOR A LONG PERIOD OF TIME.
Ambient Pressure (pump off)
4.26500v <0000>
24.5cD
14.50psi
Locate the screen the shows as below.
Place the curser on P-CK and press ENTER.
P-CK
CUST
K2
CUST K1
CUST K3
The next screen shows as below.
Place your finger over the intake of the charcoal filter. The
DIF reading should go to 2.00 or greater.
13.11 *
AMB 14.42
1.21 DIF
<0000>
If this does not occur then the pump is defective.
Note: Asterisks (****) in V, MA and MW indicate an A to D failure on the main PC board.
Note – Left arrow toggles valve. * equals purge pressure. No * equals zone pressure.
