Modine Manufacturing MPR20 - SERVICE & TROUBLESHOOTING: FURNACE ERROR CODES; Secondary Furnace Control Board Error Codes

61MCP15-500.9
SERVICE & TROUBLESHOOTING - CONTINUED
Color Flashes Condition
Error Conditions
N/A
O󰀨 No power to the control board
Red
Steady On Hard lockout on control fault or no 24 VAC.
1 Insu󰀩cient inducer air pressure when inducer is on.
2 Inducer air pressure is too high when inducer is o󰀨.
3 Flame circuitry failure - ame is on when it should be o󰀨 or it is o󰀨 when it should be on.
4 Gas valve failure.
5 Gas valve safety relay failure.
6 Reserved
7 Primary limit failure
8 Gas valve in test mode
9 Safety startup failed to validate inducer air path.
Normal and Warning Conditions
Green
Slow Standby - no communication link established
Rapid Standby - in communication with Primary Bus
1 Call for heat, no gas
2 Call for heat, gas
Yellow
2 Call for heat, gas, ame rod aged
Rapid Retry
Table 61.1 - Furnace Secondary Control Board (VB1201) Error Codes
(Applies only to C- and D-Cabinet Units with Gas Heat Option furnace model number Digit 11=8) j
j To clear furnace control board error codes, refer to the section “Clearing Furnace Control Board Error Codes” on page 25.