7
LCD Display
LCD has a backlight that will illuminate:
• When a user action has been detected (a button is pressed)
• The timeout is approximately 20 seconds.
S3
S36
S37
S24
S35
S38
S29
S30
S32
S33
S31
1
2
3
4
S15~19
S8~14
Segment
Name
Description
S3
Anti-freeze mode
Anti-Freeze mode indicated
S8,S11,S14
Lock mode
Lock mode indication
S15 ~ S19
Communication state
Communication state indication
S24
DHW mode
Water heater operating indication
S29 ~ S33
Dot, colon
Separate indication
S35
Celsius mode
Celsius temperature reading
S36
Installer mode
Unused
S37
Flame signal
Flame Signal indication
S38
Fahrenheit mode
Fahrenheit temperature reading
1A ~ 4G
8 segment
Number and character indication
Method of Operation
Summary of Contents for Marquis TWH180
Page 24: ...22 Error Codes 1 Flame Detection ...
Page 25: ...23 Error Codes 2 Gas Detection 3 Sensing air pressure ...
Page 27: ......