Boiler Control Instruction & Operation Manual
Page
50
of
68
Trouble- Shooting
General Issues (continued)
Flashing Red
Outline
Condition
Possible Cause
Rate Limit
Status
The following messages appear when the firing rate is limited or reduced to
help avoid unnecessary cycling or lockout. Refer to Soft and Hard Lockout
sections for potential corrective action.
- High Stack Temperature Rate Limit (Temp > 210 F)
- High Supply Temperature Rate Limit (Temp > 190 F)
- High Differential Temperature Rate Limit (Delta T > 80 F)
- Minimum Modulate (normal start/stop sequence )
- Forced Modulation (normal start/stop sequence)
- Burner Control Rate (normal start/stop sequence)
- Manual Firing Rate ( User selection)
- Low Fire Hold (user selection)
Boiler Size
Fault
WARNING!
Boiler size setting may not match actual boiler size.
The Boiler size setting determines min, max and light-off blower speeds.
Incorrect boiler size can cause hazardous burner conditions and improper
operation that may result in PROPERTY LOSS, PHYSICAL INJURY, OR
DEATH.
Sequencer
Fault
This alarm is active if the slave boiler has lost communication with the
Sequence Master. Check the following:
- RJ 45 peer-to-peer network disconnected
- Sequencer Master was Enabled and then Disabled
- Master
’s Boiler has been powered down.
- To clear fault restore communication or cycle power
EMS Status
EMS
Status
This alarm is active if there is a fault with the Energy Management System
(EMS) interface. Signals received from the EMS are listed with selection
status and present value.
Service Contact
Service
Contact
The user is given the contact information of the responsible installing
contractor, service company, representative and manufacturer. Refer to
page 35 for data entry instructions
Reset Control
Reset
Control
When the lockout condition has been cleared, manual reset hard Lockouts
maybe reset here or on the top of the control.