Lennox Prodigy M2 Application Manual page 62

16. Diagnostics
16.1. M2 Event Codes
When an event occurs, the M2 Unit Controller will display a code which corresponds to control function. See table 40. Error
codes are stored and can be recalled later. See the Installation & Setup Guide For The Prodigy M2 Unit Controller for infor-
mation about viewing and silencing the alarms via the user interface.
Code Display Message
0
1 ALARM(1) ERRATIC POWER
2 ALARM(2) CHECK SETTINGS
3 Reserved
4 ALARM(4) SMOKE A173
5 ALARM(5) BLOWER S52
6 ALARM(6) FILTER S27
7 ALARM(7) CONTROLLER PROBLEM
ALARM(8) STRIKE 3 ON BLOWER
8
S52
9 − 11 Reserved
12 ALARM(12) COMP 1 HIGH PRESS S4
ALARM(13) STRIKE 3 ON COMP 1
13
HIGH PRESS S4
14 ALARM(14) COMP 2 HIGH PRESS S7
ALARM(15) STRIKE 3 ON COMP 2
15
HIGH PRESS S7
ALARM(16) COMP 3 HIGH PRESS
16
S28
ALARM(17) STRIKE 3 ON COMP 3
17
HIGH PRESS S28
ALARM(18) COMP 4 HIGH PRESS
18
S96
ALARM(19) STRIKE 3 ON COMP 4
19
HIGH PRESS S96
NOTE − Alarms 12−19 could also be caused by a high temperature condition on some compressors equipped with a high temperature shutdown.
20 ALARM(20) UNIT SHUTDOWN A42
ALARM(21) STRIKE 3 UNIT SHUT-
21
DOWN A42
ALARM(22) COMP 1 LOW PRESS
22
S87
ALARM(23) STRIKE 3 ON COMP 1
23
S87
ALARM(24) COMP 2 LOW PRESS
24
S88
ALARM(25) STRIKE 3 ON COMP 2
25
S88
ALARM(26) COMP 3 LOW PRESS
26
S98
ALARM(27) STRIKE 3 ON COMP 3
27
S98
ALARM(28) COMP 4 LOW PRESS
28
S97
ALARM(29) STRIKE 3 ON COMP 4
29
S97
30 ALARM(30) UNIT SHUTDOWN S149
506457−01 05/10
Table 40. M2 Event Codes
Action
CHECK POWER CONNECTIONS
RESET CONTROLLER. CHECK UNIT SETTINGS. CONTACT LENNOX IF
PROBLEM PERSISTS.
SMOKE MODE. CHECK FOR SOURCE OF SMOKE.
UNIT OFF. AIR FLOW SWITCH OPEN 16 SEC AFTER DEMAND. CHECK
BLOWER PARTS
REPLACE FILTER OR CHECK FILTER SWITCH S27
RESET CONTROLLER. CHECK UNIT SETTINGS. CONTACT LENNOX IF
PROBLEM PERSISTS.
LOCKOUT. MULTIPLE CODE 5. CHECK BLOWER PARTS
COMP OFF. CHECK CHARGE, FANS, COIL.
COMP LOCKOUT. CHECK CHECK CHARGE, FANS, COIL. USE SERVICE
MENU TO CLEAR LOCKOUTS.
COMP OFF. CHECK CHARGE, FANS, COIL.
COMP LOCKOUT. CHECK CHECK CHARGE, FANS, COIL. USE SERVICE
MENU TO CLEAR LOCKOUTS.
COMP OFF. CHECK CHARGE, FANS, COIL.
COMP LOCKOUT. CHECK CHARGE, FANS, COIL. USE SERVICE MENU
TO CLEAR LOCKOUTS.
COMP OFF. CHECK CHARGE, FANS, COIL.
COMP LOCKOUT. CHECK CHECK CHARGE, FANS, COIL. USE SERVICE
MENU TO CLEAR LOCKOUTS.
CHECK PHASE MONITOR
CHECK PHASE MONITOR
COMP OFF. CHECK CHARGE, FILTERS, AIR FLOW. COIL
COMP LOCKOUT. CHECK CHECK CHARGE, FILTER, AIR FLOW, COIL.
USE SERVICE MENU TO CLEAR LOCKOUTS.
COMP OFF. CHECK CHARGE, FILTERS, AIR FLOW. COIL
COMP LOCKOUT. CHECK CHECK CHARGE, FILTER, AIR FLOW, COIL.
USE SERVICE MENU TO CLEAR LOCKOUTS.
COMP OFF. CHECK CHARGE, FILTERS, AIR FLOW. COIL
COMP LOCKOUT. CHECK CHECK CHARGE, FILTER, AIR FLOW, COIL.
USE SERVICE MENU TO CLEAR LOCKOUTS.
COMP OFF. CHECK CHARGE, FILTERS, AIR FLOW. COIL
COMP LOCKOUT. CHECK CHECK CHARGE, FILTER, AIR FLOW, COIL.
USE SERVICE MENU TO CLEAR LOCKOUTS.
CHECK OVERFLOW SW
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16. Diagnostics
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