Maytag Amana VZC20 Service And Troubleshooting page 42

SERVICING
TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT
2-digit 7 segment displays
digit 7 segment displays on indoor control board
show current status of state, error code and airflow.
" * * "
State code
(2sec.)
2.
" _ E "
Error
(2sec.)
"A...12...40...".
" _ A "
(2sec.)
error.
1. State
2. When the unit is havingsome majorerror code in normalmode, 2-digit 7 segment displays keep
showing error code.
2. Error code
42
" _ _ "
No display
(0.5sec.)
" _ _ " " * * "
No display Error code
(0.5sec.) (2sec.)
" _ _ " " * * "
No display Upper 2-digit of
(0.5sec.) CFM (2sec.)
7 Segment LED
Display (State)
(No Di s pl a y) INTERNAL CONTROL FAULT/NO POWER
On STANDBY, WAITING FOR INPUTS
FAN COOL-COMMUNICATING MODE ONLY
FC (Aux Hea t Dema nd)
FAN HEAT-COMMUNICATING MODE ONLY
FH (Aux Hea t Dema nd)
_F FAN ONLY (Fa n Dema nd-Ma nua l )
ELECTRIC HEAT LOW (Hea t Dema nd, Ba ck-up
H1 Hea t Dema nd)
ELECTRIC HEAT HIGH (Hea t Dema nd, Ba ck-up
H2 Hea t Dema nd)
dF DEFROST COMMUNICATING MODE ONLY
HUMIDITY RUNNING WITHOUT HEATING
Hu (Humi di fi ca t on Dema nd)
" _ _ "
No display
(0.5sec.)
For example, if the CFM is 1240CFM,7 segmentdisplay shows
" _ _ "
No display
(0.5sec.)
indoorunit error code to solve the
Description of Condition
" * * " " _ _ "
Lower 2-digit of No display
CFM (2sec.) (0.5sec.)
indoorunit. In the event