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Lochinvar
151 - 801 service manual AWII-SERRev A 8/10
Models:
151 - 801
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40
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Troubleshooting
Install
Maintenance
Check ignition ground wiring
Address reported problems
Reset last 10 errors
Combustion Analysis Procedure
Fault
Check flame signal
Gas valve adjustment procedure
Page 40
Image 40
Revision Notes:
Revision A (ECO #C06238) initial release.
AWII-SER
Rev A
8/10
Page 39
Page 40
Image 40
Page 39
Contents
AWII-SERRev A
Models
Save this manual for future reference
DANGER
Hazard definitions
Contents
When servicing water heater
Please read before proceeding
Handling ceramic fiber materials
Water heater operation
What is in this manual?
Service
Maintenance
Troubleshooting
1Service
The Armor water heater display
NAVIGATION DIAL PRESS OR TURN RESET KEY
RIGHT SELECT KEY
Control inputs
LOW VOLTAGE
CONNECTION
BOARD
Control outputs
LOW VOLTAGE CONNECTION BOARD
1Service continued
SMART SYSTEM CONTROL BOARD
Access modes
Installer
General Operation
How the water heater operates
OPERATION
DISPLAY
Table 1A Sequence of operation
1Service continued
Display panel menu access
BUTTON
SCREEN
OPERATION
Display panel parameter access
BUTTON
SCREEN
OPERATION
User Access
Installer Access
Parameter table
Menu
User Access
Installer Access
Parameter table
Menu
Display Timeout
Viewable and changeable control parameters
A General
Date and Time
D DHW Settings
Reset last 10 errors
Service Mode Delay
B Data Logging
ModBus T/O Timeout
F Control modes
BMS Thermostat Input Active / Inactive
BMS Active / Inactive
BMS Type Power / Set Point
Minimum On/Off Time
G Circulation pumps
H BMS
I Service Notification
Service Notification in Months
Service Notification Running Time
Service Notification Cycles
2Maintenance Maintenance and annual startup
Service technician
Owner maintenance
Table 2A Service and Maintenance Schedules
2Maintenance
Address reported problems
Clean condensate trap
Inspect water heater area
2Maintenance continued
Flue vent system and air piping
Check water system
Check expansion tank
Check ignition ground wiring
Check all water heater wiring
Check control settings
Figure 2-2 Burner Assembly
Check flame signal
Cleaning heat exchanger
Table 2B Heat Exchanger Cleaning Kits
Review with owner
3Troubleshooting
Before troubleshooting
Check control module fuses
Check the following
3Troubleshooting continued
FAULT
Table 3A Troubleshooting Chart - No Display
CAUSE
Wire Color - R/BK and Y
Wire Color - G and Y
Wire Color - W/B and Y
Wire Color - PR and Y
Table 3E Troubleshooting Chart - Noisy System
Noisy
No Pump
Relief Valve
Flow Switch
DESCRIPTION
3Troubleshooting
FAULT
Anti-cycling
Flame Fail Ign
3Troubleshooting continued
FAULT
No Flame
Running
3Troubleshooting
FAULT
Auto Reset
Manual Reset
Flame Sequence
High Limit
Fan Low
Fan Speed Low
GV/Relay
Fail
Sensor Shorted
Louver Proving
Flue Temp High
Delta T High
Service Blk
Outlet Temp High
Rem Ctrl Flt
3Troubleshooting
Watch Dog Error
No Error Stored
Fatal Error
Low 24 VAC
Combustion Analysis Procedure
Gas Valve Adjustment
POSSIBLE CAUSE
Table 3G Flue Products
Gas valve adjustment procedure
Figure 3-2 Gas Valve Adjustment Models
Figure 3-3 Gas Valve Adjustment Model
Models
Figure 3-4 Gas Valve Adjustment Model
Figure 3-5 Gas Valve Adjustment Models
Models
3Troubleshooting
Page
AWII-SERRev A 8/10
