Error Codes And Alarm Status - Friedrich KUHL R-410A Service Manual

ERROR CODES AND ALARM STATUS

Maintenance
Error
ICON
Code
1 Flash
2 Flash
3 Flash
4 Flash
5 Flash
6 Flash
7 Flash
8 Log Only
9 Log Only
10 Log Only
11 On
12 Flash
13 Flash
14 Flash
15 Solid On
16 Flash
17 Flash
18 Flash
19 Flash
20 Solid On
21 OFF, Log Only Special Test 4 Severity Level 4
22 OFF, Log Only
23 OFF, Log Only
24 Flash
Key Sequence
Enter Maintenance Menu
Reset Error Codes & Error History Press
56
Problem
Front Panel Button Stuck For More
Than 20 Seconds
Input Voltage Out of Specification (103
- 127 / 187 - 253)
Indoor Temperature Sensor is Open or
Shorted
Indoor Coil Temperature Sensor is
Open or Shorted
Outdoor Coil Temperature Sensor is
Open or Shorted
Outdoor Coil > (grater than) 175 F
Indoor Coil < (less than) 30 F for 2
consecutive minutes
Unit Cycles > (grater than) 9 Times per
hour
Unit Cycles < (less than) 3 Times per
Hour
Room Freeze Protection
WallStat Problem or Connection Issue
Discharge Air > (greater than) 185 F
Prerssure Limit Switch Open
Discharge Air Temperature Sensor is
Open or Shorted
Heat Pump Error
Temperature Beyond Operating Limits
Equipment Doesn't Meet Minimum
Configuration
Special Test 1 Severity Level 1
Special Test 2 Severity Level 2
Special Test 3 Severity Level 3
Outdoor Coil Temperature < 30 F for 2
consecutive Minutes
Frost Protection (for Heat Pump Only
Unit- YS10M10)
Outdoor Air Temperature Sensor is
Open or Shorted
Press SYSTEM + SCHEDULE + BACK + DISPLAY/ENTER for 6 secs or until double beep sounds( )
+ for 3 secs or until double beep sounds ( )
Control Board's Action
Continue to monitor for "OPEN" (Unstuck) switch. Do not process switch
input. ENSURE FRONT COVER DOES NOT DEPRESS BUTTONS
Stop.Open all relays until voltage is back within specs. Resume operation
Set temp to 75°F in COOLING or 68°F in HEATING. Unit continues to
operate
Control Board sets temp to 40°F. Override sensor. Unit Continues to
operate.
Sets temp to 20°F. Override sensor. Continue operation. Use Elec Heat if
available for HEATING. If not available use HEAT PUMP if outdoor temp
allows.
Shut down for 5 min. Resume operation for 3 min. Continues to monitor. If
test fails 3 times, the severity is increased and the unit operation is locked
out.
Turn compressor off. Run High Fan speed. When coil temp reachs 45°F
resume operation after lockout time.
Continue operation. Continue to monitor. Take no action. Log Only.
Continue operation. Continue to monitor. Take no action. Log Only.
Only used if Electric Heat is available. Run High Speed and Electric heat
until room temp reaches 46°F. Display "FRZ" during operation. Logged
Only
Severity 4 error is. Unit operates based on standard input mapping.
Severity 2 error opens all relays. Unit will not operate.
Shutdown heat pump and electric heater. Run high fan speed until temp is
100°F. Resume operation. Third occurance in 1 hour locks unit out.
If unit is cooling or heat pump on,shut down compressor. Run high fan until
switch closes. Resume operation. Third occurance in 1 hour locks unit out.
Override Sensor. Set temp to 75°F. Continue to monitor. Set error code 14
ON.
If indoor coil temp < (Lesser than) ambient temp for 3 minutes. Unit uses
electric heat to satisfy heating demand.
Ambient temp < (less than) 0°F and ambient temp > (greater than) 130°F.
Set error code 16 ON. When cleared return unit to normal.
Must have compressor enabled and at least 2 fan speeds
Unit shuts down. Inputs via front panel or t-stat are ignored. Qualified
Technical Service required URGENT
Unit operates. Qualified Technical Service required
Error is Logged Only. Unit operates. Severity 3 keeps unit running.
Attention is needed
Error is Logged Only. Unit operates. Severity 4 keeps unit running.
Unit will use electric heat to satisfy heating demands until temp > 45°F.
Unit must be a Heat Pump.
Unit will run active defrost for a minimum of 6 minutes when Heat Pump
run time is greater than 60 minutes and outdoor coil temp is 26 F or less.
Continue with normal operation. Continue to monitor sensor.
Action