Kidde VM-1 - Page 169

Chapter 7: Service and troubleshooting
P/N 3101890-EN • REV 006 • ISS 21JUN18 161
Table 65: Detector device trouble messages
Device
Trouble tab message Possible cause Possible solution
External device line short
The detector is defective Replace the detector
External device line open
The detector is defective Replace the detector
Error XMIT light
The detector is dirty Clean the detector
Device switched to short after
isolator relay operated
A short is detected on the loop Locate and remove the cause of the
short
ESK value too low
• The detector is dirty
• The ion chamber is bad
• Clean the detector
• Replace the detector
ESK slope too high
• The detector is dirty
• The ion chamber is bad
• Clean the detector
• Replace the detector
ESK slope too low
• The detector is dirty
• The ion chamber is bad
• Clean the detector
• Replace the detector
Quiescent too large
Devices on the loop are drawing
too much current during the
mapping process
Place a temporary short across the
data loop (approximately
5 seconds)
Quiescent too small
Devices on the loop are not
drawing enough current during the
mapping process
• Check for defective wiring
• Replace the device
Short on relay base
The relay base is bad Replace the relay base
External or isolator relay failure to
switch
The base is bad Replace the base
External or isola
tor relay switched • The relay base is bad
• External electrical noise is
present
• Replace the relay base
• Remove or shield the noise
source
“O” value too small
The base is bad Replace the base
Ion rate
-of-rise too high The ion chamber is bad Replace the detector
Ion quiescent too high
The detector is dirty Clean the detector
Ion quiescent too low
The detector is dirty Clean the detector
Ion value too low
The detector is defective Replace the detector
Thermal value too high
The base is bad Replace the base
Thermal value too low
The base is bad Replace the base
A/D converter fault
The A/D converter is defective Replace the detector
EEPROM
checksum error The EEPROM is bad Replace the detector
EEPROM
write time out The EEPROM is bad Replace the detector
Unknown device type
The EEPROM is bad Replace the detector
EEPROM
write verify fault The EEPROM is bad Replace the detector
Ambient light too high
• The detector is dirty
• Outside light is reaching the
detector chamber
• Clean the detector
• Eliminate the light source